From: Alexandre Belloni <alexandre.belloni@bootlin.com>
To: Ashishx88 <ashish.emailaddress@gmail.com>
Cc: openembedded-core@lists.openembedded.org,
Ashish Kumar Mishra <ashishm@mvista.com>
Subject: Re: [OE-core] [PATCH v2] binutils: Add patch to fix CVE-2023-25584
Date: Tue, 23 Jan 2024 23:17:37 +0100 [thread overview]
Message-ID: <20240123221737fdab60d9@mail.local> (raw)
In-Reply-To: <20240122085956.3991507-1-ashish.emailaddress@gmail.com>
Hello,
This doesn't apply on master, please specify which branch this is for.
On 22/01/2024 14:29:56+0530, Ashishx88 wrote:
> Upstream-Status: Backport [https://sourceware.org/git/?p=binutils-gdb.git;a=patch;h=77c225bdeb410cf60da804879ad41622f5f1aa44]
>
> CVE: CVE-2023-25584
> Signed-off-by: Ashish Kumar Mishra <ashishm@mvista.com>
> ---
> .../binutils/binutils-2.39.inc | 1 +
> .../binutils/0016-CVE-2023-25584.patch | 535 ++++++++++++++++++
> 2 files changed, 536 insertions(+)
> create mode 100644 meta/recipes-devtools/binutils/binutils/0016-CVE-2023-25584.patch
>
> diff --git a/meta/recipes-devtools/binutils/binutils-2.39.inc b/meta/recipes-devtools/binutils/binutils-2.39.inc
> index 419571d56c..d57c97edcb 100644
> --- a/meta/recipes-devtools/binutils/binutils-2.39.inc
> +++ b/meta/recipes-devtools/binutils/binutils-2.39.inc
> @@ -36,6 +36,7 @@ SRC_URI = "\
> file://0014-CVE-2022-38128-2.patch \
> file://0014-CVE-2022-38128-3.patch \
> file://0015-CVE-2022-4285.patch \
> + file://0016-CVE-2023-25584.patch \
> "
> S = "${WORKDIR}/git"
> # Already in 2.39 branch
> diff --git a/meta/recipes-devtools/binutils/binutils/0016-CVE-2023-25584.patch b/meta/recipes-devtools/binutils/binutils/0016-CVE-2023-25584.patch
> new file mode 100644
> index 0000000000..c19e1adb72
> --- /dev/null
> +++ b/meta/recipes-devtools/binutils/binutils/0016-CVE-2023-25584.patch
> @@ -0,0 +1,535 @@
> +From 278ba66aa1d2f1a355940ae2c706ad804becda07 Mon Sep 17 00:00:00 2001
> +From: Alan Modra <amodra@gmail.com>
> +Date: Sun, 21 Jan 2024 20:10:49 +0530
> +Subject: [PATCH] CVE-2023-25584
> +
> +Lack of bounds checking in vms-alpha.c parse_module
> +
> + PR 29873
> + PR 29874
> + PR 29875
> + PR 29876
> + PR 29877
> + PR 29878
> + PR 29879
> + PR 29880
> + PR 29881
> + PR 29882
> + PR 29883
> + PR 29884
> + PR 29885
> + PR 29886
> + PR 29887
> + PR 29888
> + PR 29889
> + PR 29890
> + PR 29891
> + * vms-alpha.c (parse_module): Make length param bfd_size_type.
> + Delete length == -1 checks. Sanity check record_length.
> + Sanity check DST__K_MODBEG, DST__K_RTNBEG, DST__K_RTNEND lengths.
> + Sanity check DST__K_SOURCE and DST__K_LINE_NUM elements
> + before accessing.
> + (build_module_list): Pass dst_section size to parse_modu
> +
> +Closes: CVE-2023-25584
> +CVE: CVE-2023-25584
> +
> +Upstream-Status: Backport [https://sourceware.org/git/?p=binutils-gdb.git;a=patch;h=77c225bdeb410cf60da804879ad41622f5f1aa44]
> +
> +Signed-off-by: Ashish Kumar Mishra <ashish.emailaddress@gmail.com>
> +---
> + bfd/vms-alpha.c | 213 ++++++++++++++++++++++++++++++++++++++----------
> + 1 file changed, 168 insertions(+), 45 deletions(-)
> +
> +diff --git a/bfd/vms-alpha.c b/bfd/vms-alpha.c
> +index 5a867f71..9b0b2a51 100644
> +--- a/bfd/vms-alpha.c
> ++++ b/bfd/vms-alpha.c
> +@@ -4340,7 +4340,7 @@ new_module (bfd *abfd)
> +
> + static bool
> + parse_module (bfd *abfd, struct module *module, unsigned char *ptr,
> +- int length)
> ++ bfd_size_type length)
> + {
> + unsigned char *maxptr = ptr + length;
> + unsigned char *src_ptr, *pcl_ptr;
> +@@ -4361,7 +4361,7 @@ parse_module (bfd *abfd, struct module *module, unsigned char *ptr,
> + return false;
> + module->line_table = curr_line;
> +
> +- while (length == -1 || ptr < maxptr)
> ++ while (ptr + 3 < maxptr)
> + {
> + /* The first byte is not counted in the recorded length. */
> + int rec_length = bfd_getl16 (ptr) + 1;
> +@@ -4369,15 +4369,19 @@ parse_module (bfd *abfd, struct module *module, unsigned char *ptr,
> +
> + vms_debug2 ((2, "DST record: leng %d, type %d\n", rec_length, rec_type));
> +
> +- if (length == -1 && rec_type == DST__K_MODEND)
> ++ if (rec_length > maxptr - ptr)
> ++ break;
> ++ if (rec_type == DST__K_MODEND)
> + break;
> +
> + switch (rec_type)
> + {
> + case DST__K_MODBEG:
> ++ if (rec_length <= DST_S_B_MODBEG_NAME)
> ++ break;
> + module->name
> + = _bfd_vms_save_counted_string (abfd, ptr + DST_S_B_MODBEG_NAME,
> +- maxptr - (ptr + DST_S_B_MODBEG_NAME));
> ++ rec_length - DST_S_B_MODBEG_NAME);
> +
> + curr_pc = 0;
> + prev_pc = 0;
> +@@ -4391,13 +4395,15 @@ parse_module (bfd *abfd, struct module *module, unsigned char *ptr,
> + break;
> +
> + case DST__K_RTNBEG:
> ++ if (rec_length <= DST_S_B_RTNBEG_NAME)
> ++ break;
> + funcinfo = (struct funcinfo *)
> + bfd_zalloc (abfd, sizeof (struct funcinfo));
> + if (!funcinfo)
> + return false;
> + funcinfo->name
> + = _bfd_vms_save_counted_string (abfd, ptr + DST_S_B_RTNBEG_NAME,
> +- maxptr - (ptr + DST_S_B_RTNBEG_NAME));
> ++ rec_length - DST_S_B_RTNBEG_NAME);
> + funcinfo->low = bfd_getl32 (ptr + DST_S_L_RTNBEG_ADDRESS);
> + funcinfo->next = module->func_table;
> + module->func_table = funcinfo;
> +@@ -4407,6 +4413,8 @@ parse_module (bfd *abfd, struct module *module, unsigned char *ptr,
> + break;
> +
> + case DST__K_RTNEND:
> ++ if (rec_length < DST_S_L_RTNEND_SIZE + 4)
> ++ break;
> + if (!module->func_table)
> + return false;
> + module->func_table->high = module->func_table->low
> +@@ -4439,10 +4447,63 @@ parse_module (bfd *abfd, struct module *module, unsigned char *ptr,
> +
> + vms_debug2 ((3, "source info\n"));
> +
> +- while (src_ptr < ptr + rec_length)
> ++ while (src_ptr - ptr < rec_length)
> + {
> + int cmd = src_ptr[0], cmd_length, data;
> +
> ++ switch (cmd)
> ++ {
> ++ case DST__K_SRC_DECLFILE:
> ++ if (src_ptr - ptr + DST_S_B_SRC_DF_LENGTH >= rec_length)
> ++ cmd_length = 0x10000;
> ++ else
> ++ cmd_length = src_ptr[DST_S_B_SRC_DF_LENGTH] + 2;
> ++ break;
> ++
> ++ case DST__K_SRC_DEFLINES_B:
> ++ cmd_length = 2;
> ++ break;
> ++
> ++ case DST__K_SRC_DEFLINES_W:
> ++ cmd_length = 3;
> ++ break;
> ++
> ++ case DST__K_SRC_INCRLNUM_B:
> ++ cmd_length = 2;
> ++ break;
> ++
> ++ case DST__K_SRC_SETFILE:
> ++ cmd_length = 3;
> ++ break;
> ++
> ++ case DST__K_SRC_SETLNUM_L:
> ++ cmd_length = 5;
> ++ break;
> ++
> ++ case DST__K_SRC_SETLNUM_W:
> ++ cmd_length = 3;
> ++ break;
> ++
> ++ case DST__K_SRC_SETREC_L:
> ++ cmd_length = 5;
> ++ break;
> ++
> ++ case DST__K_SRC_SETREC_W:
> ++ cmd_length = 3;
> ++ break;
> ++
> ++ case DST__K_SRC_FORMFEED:
> ++ cmd_length = 1;
> ++ break;
> ++
> ++ default:
> ++ cmd_length = 2;
> ++ break;
> ++ }
> ++
> ++ if (src_ptr - ptr + cmd_length > rec_length)
> ++ break;
> ++
> + switch (cmd)
> + {
> + case DST__K_SRC_DECLFILE:
> +@@ -4467,7 +4528,6 @@ parse_module (bfd *abfd, struct module *module, unsigned char *ptr,
> +
> + module->file_table [fileid].name = filename;
> + module->file_table [fileid].srec = 1;
> +- cmd_length = src_ptr[DST_S_B_SRC_DF_LENGTH] + 2;
> + vms_debug2 ((4, "DST_S_C_SRC_DECLFILE: %d, %s\n",
> + fileid, module->file_table [fileid].name));
> + }
> +@@ -4484,7 +4544,6 @@ parse_module (bfd *abfd, struct module *module, unsigned char *ptr,
> + srec->sfile = curr_srec->sfile;
> + curr_srec->next = srec;
> + curr_srec = srec;
> +- cmd_length = 2;
> + vms_debug2 ((4, "DST_S_C_SRC_DEFLINES_B: %d\n", data));
> + break;
> +
> +@@ -4499,14 +4558,12 @@ parse_module (bfd *abfd, struct module *module, unsigned char *ptr,
> + srec->sfile = curr_srec->sfile;
> + curr_srec->next = srec;
> + curr_srec = srec;
> +- cmd_length = 3;
> + vms_debug2 ((4, "DST_S_C_SRC_DEFLINES_W: %d\n", data));
> + break;
> +
> + case DST__K_SRC_INCRLNUM_B:
> + data = src_ptr[DST_S_B_SRC_UNSBYTE];
> + curr_srec->line += data;
> +- cmd_length = 2;
> + vms_debug2 ((4, "DST_S_C_SRC_INCRLNUM_B: %d\n", data));
> + break;
> +
> +@@ -4514,21 +4571,18 @@ parse_module (bfd *abfd, struct module *module, unsigned char *ptr,
> + data = bfd_getl16 (src_ptr + DST_S_W_SRC_UNSWORD);
> + curr_srec->sfile = data;
> + curr_srec->srec = module->file_table[data].srec;
> +- cmd_length = 3;
> + vms_debug2 ((4, "DST_S_C_SRC_SETFILE: %d\n", data));
> + break;
> +
> + case DST__K_SRC_SETLNUM_L:
> + data = bfd_getl32 (src_ptr + DST_S_L_SRC_UNSLONG);
> + curr_srec->line = data;
> +- cmd_length = 5;
> + vms_debug2 ((4, "DST_S_C_SRC_SETLNUM_L: %d\n", data));
> + break;
> +
> + case DST__K_SRC_SETLNUM_W:
> + data = bfd_getl16 (src_ptr + DST_S_W_SRC_UNSWORD);
> + curr_srec->line = data;
> +- cmd_length = 3;
> + vms_debug2 ((4, "DST_S_C_SRC_SETLNUM_W: %d\n", data));
> + break;
> +
> +@@ -4536,7 +4590,6 @@ parse_module (bfd *abfd, struct module *module, unsigned char *ptr,
> + data = bfd_getl32 (src_ptr + DST_S_L_SRC_UNSLONG);
> + curr_srec->srec = data;
> + module->file_table[curr_srec->sfile].srec = data;
> +- cmd_length = 5;
> + vms_debug2 ((4, "DST_S_C_SRC_SETREC_L: %d\n", data));
> + break;
> +
> +@@ -4544,19 +4597,16 @@ parse_module (bfd *abfd, struct module *module, unsigned char *ptr,
> + data = bfd_getl16 (src_ptr + DST_S_W_SRC_UNSWORD);
> + curr_srec->srec = data;
> + module->file_table[curr_srec->sfile].srec = data;
> +- cmd_length = 3;
> + vms_debug2 ((4, "DST_S_C_SRC_SETREC_W: %d\n", data));
> + break;
> +
> + case DST__K_SRC_FORMFEED:
> +- cmd_length = 1;
> + vms_debug2 ((4, "DST_S_C_SRC_FORMFEED\n"));
> + break;
> +
> + default:
> + _bfd_error_handler (_("unknown source command %d"),
> + cmd);
> +- cmd_length = 2;
> + break;
> + }
> +
> +@@ -4569,18 +4619,114 @@ parse_module (bfd *abfd, struct module *module, unsigned char *ptr,
> +
> + vms_debug2 ((3, "line info\n"));
> +
> +- while (pcl_ptr < ptr + rec_length)
> ++ while (pcl_ptr - ptr < rec_length)
> + {
> + /* The command byte is signed so we must sign-extend it. */
> + int cmd = ((signed char *)pcl_ptr)[0], cmd_length, data;
> +
> ++ switch (cmd)
> ++ {
> ++ case DST__K_DELTA_PC_W:
> ++ cmd_length = 3;
> ++ break;
> ++
> ++ case DST__K_DELTA_PC_L:
> ++ cmd_length = 5;
> ++ break;
> ++
> ++ case DST__K_INCR_LINUM:
> ++ cmd_length = 2;
> ++ break;
> ++
> ++ case DST__K_INCR_LINUM_W:
> ++ cmd_length = 3;
> ++ break;
> ++
> ++ case DST__K_INCR_LINUM_L:
> ++ cmd_length = 5;
> ++ break;
> ++
> ++ case DST__K_SET_LINUM_INCR:
> ++ cmd_length = 2;
> ++ break;
> ++
> ++ case DST__K_SET_LINUM_INCR_W:
> ++ cmd_length = 3;
> ++ break;
> ++
> ++ case DST__K_RESET_LINUM_INCR:
> ++ cmd_length = 1;
> ++ break;
> ++
> ++ case DST__K_BEG_STMT_MODE:
> ++ cmd_length = 1;
> ++ break;
> ++
> ++ case DST__K_END_STMT_MODE:
> ++ cmd_length = 1;
> ++ break;
> ++
> ++ case DST__K_SET_LINUM_B:
> ++ cmd_length = 2;
> ++ break;
> ++
> ++ case DST__K_SET_LINUM:
> ++ cmd_length = 3;
> ++ break;
> ++
> ++ case DST__K_SET_LINUM_L:
> ++ cmd_length = 5;
> ++ break;
> ++
> ++ case DST__K_SET_PC:
> ++ cmd_length = 2;
> ++ break;
> ++
> ++ case DST__K_SET_PC_W:
> ++ cmd_length = 3;
> ++ break;
> ++
> ++ case DST__K_SET_PC_L:
> ++ cmd_length = 5;
> ++ break;
> ++
> ++ case DST__K_SET_STMTNUM:
> ++ cmd_length = 2;
> ++ break;
> ++
> ++ case DST__K_TERM:
> ++ cmd_length = 2;
> ++ break;
> ++
> ++ case DST__K_TERM_W:
> ++ cmd_length = 3;
> ++ break;
> ++
> ++ case DST__K_TERM_L:
> ++ cmd_length = 5;
> ++ break;
> ++
> ++ case DST__K_SET_ABS_PC:
> ++ cmd_length = 5;
> ++ break;
> ++
> ++ default:
> ++ if (cmd <= 0)
> ++ cmd_length = 1;
> ++ else
> ++ cmd_length = 2;
> ++ break;
> ++ }
> ++
> ++ if (pcl_ptr - ptr + cmd_length > rec_length)
> ++ break;
> ++
> + switch (cmd)
> + {
> + case DST__K_DELTA_PC_W:
> + data = bfd_getl16 (pcl_ptr + DST_S_W_PCLINE_UNSWORD);
> + curr_pc += data;
> + curr_linenum += 1;
> +- cmd_length = 3;
> + vms_debug2 ((4, "DST__K_DELTA_PC_W: %d\n", data));
> + break;
> +
> +@@ -4588,131 +4734,111 @@ parse_module (bfd *abfd, struct module *module, unsigned char *ptr,
> + data = bfd_getl32 (pcl_ptr + DST_S_L_PCLINE_UNSLONG);
> + curr_pc += data;
> + curr_linenum += 1;
> +- cmd_length = 5;
> + vms_debug2 ((4, "DST__K_DELTA_PC_L: %d\n", data));
> + break;
> +
> + case DST__K_INCR_LINUM:
> + data = pcl_ptr[DST_S_B_PCLINE_UNSBYTE];
> + curr_linenum += data;
> +- cmd_length = 2;
> + vms_debug2 ((4, "DST__K_INCR_LINUM: %d\n", data));
> + break;
> +
> + case DST__K_INCR_LINUM_W:
> + data = bfd_getl16 (pcl_ptr + DST_S_W_PCLINE_UNSWORD);
> + curr_linenum += data;
> +- cmd_length = 3;
> + vms_debug2 ((4, "DST__K_INCR_LINUM_W: %d\n", data));
> + break;
> +
> + case DST__K_INCR_LINUM_L:
> + data = bfd_getl32 (pcl_ptr + DST_S_L_PCLINE_UNSLONG);
> + curr_linenum += data;
> +- cmd_length = 5;
> + vms_debug2 ((4, "DST__K_INCR_LINUM_L: %d\n", data));
> + break;
> +
> + case DST__K_SET_LINUM_INCR:
> + _bfd_error_handler
> + (_("%s not implemented"), "DST__K_SET_LINUM_INCR");
> +- cmd_length = 2;
> + break;
> +
> + case DST__K_SET_LINUM_INCR_W:
> + _bfd_error_handler
> + (_("%s not implemented"), "DST__K_SET_LINUM_INCR_W");
> +- cmd_length = 3;
> + break;
> +
> + case DST__K_RESET_LINUM_INCR:
> + _bfd_error_handler
> + (_("%s not implemented"), "DST__K_RESET_LINUM_INCR");
> +- cmd_length = 1;
> + break;
> +
> + case DST__K_BEG_STMT_MODE:
> + _bfd_error_handler
> + (_("%s not implemented"), "DST__K_BEG_STMT_MODE");
> +- cmd_length = 1;
> + break;
> +
> + case DST__K_END_STMT_MODE:
> + _bfd_error_handler
> + (_("%s not implemented"), "DST__K_END_STMT_MODE");
> +- cmd_length = 1;
> + break;
> +
> + case DST__K_SET_LINUM_B:
> + data = pcl_ptr[DST_S_B_PCLINE_UNSBYTE];
> + curr_linenum = data;
> +- cmd_length = 2;
> + vms_debug2 ((4, "DST__K_SET_LINUM_B: %d\n", data));
> + break;
> +
> + case DST__K_SET_LINUM:
> + data = bfd_getl16 (pcl_ptr + DST_S_W_PCLINE_UNSWORD);
> + curr_linenum = data;
> +- cmd_length = 3;
> + vms_debug2 ((4, "DST__K_SET_LINE_NUM: %d\n", data));
> + break;
> +
> + case DST__K_SET_LINUM_L:
> + data = bfd_getl32 (pcl_ptr + DST_S_L_PCLINE_UNSLONG);
> + curr_linenum = data;
> +- cmd_length = 5;
> + vms_debug2 ((4, "DST__K_SET_LINUM_L: %d\n", data));
> + break;
> +
> + case DST__K_SET_PC:
> + _bfd_error_handler
> + (_("%s not implemented"), "DST__K_SET_PC");
> +- cmd_length = 2;
> + break;
> +
> + case DST__K_SET_PC_W:
> + _bfd_error_handler
> + (_("%s not implemented"), "DST__K_SET_PC_W");
> +- cmd_length = 3;
> + break;
> +
> + case DST__K_SET_PC_L:
> + _bfd_error_handler
> + (_("%s not implemented"), "DST__K_SET_PC_L");
> +- cmd_length = 5;
> + break;
> +
> + case DST__K_SET_STMTNUM:
> + _bfd_error_handler
> + (_("%s not implemented"), "DST__K_SET_STMTNUM");
> +- cmd_length = 2;
> + break;
> +
> + case DST__K_TERM:
> + data = pcl_ptr[DST_S_B_PCLINE_UNSBYTE];
> + curr_pc += data;
> +- cmd_length = 2;
> + vms_debug2 ((4, "DST__K_TERM: %d\n", data));
> + break;
> +
> + case DST__K_TERM_W:
> + data = bfd_getl16 (pcl_ptr + DST_S_W_PCLINE_UNSWORD);
> + curr_pc += data;
> +- cmd_length = 3;
> + vms_debug2 ((4, "DST__K_TERM_W: %d\n", data));
> + break;
> +
> + case DST__K_TERM_L:
> + data = bfd_getl32 (pcl_ptr + DST_S_L_PCLINE_UNSLONG);
> + curr_pc += data;
> +- cmd_length = 5;
> + vms_debug2 ((4, "DST__K_TERM_L: %d\n", data));
> + break;
> +
> + case DST__K_SET_ABS_PC:
> + data = bfd_getl32 (pcl_ptr + DST_S_L_PCLINE_UNSLONG);
> + curr_pc = data;
> +- cmd_length = 5;
> + vms_debug2 ((4, "DST__K_SET_ABS_PC: 0x%x\n", data));
> + break;
> +
> +@@ -4721,15 +4847,11 @@ parse_module (bfd *abfd, struct module *module, unsigned char *ptr,
> + {
> + curr_pc -= cmd;
> + curr_linenum += 1;
> +- cmd_length = 1;
> + vms_debug2 ((4, "bump pc to 0x%lx and line to %d\n",
> + (unsigned long)curr_pc, curr_linenum));
> + }
> + else
> +- {
> +- _bfd_error_handler (_("unknown line command %d"), cmd);
> +- cmd_length = 2;
> +- }
> ++ _bfd_error_handler (_("unknown line command %d"), cmd);
> + break;
> + }
> +
> +@@ -4859,7 +4981,8 @@ build_module_list (bfd *abfd)
> + return NULL;
> +
> + module = new_module (abfd);
> +- if (!parse_module (abfd, module, PRIV (dst_section)->contents, -1))
> ++ if (!parse_module (abfd, module, PRIV (dst_section)->contents,
> ++ PRIV (dst_section)->size))
> + return NULL;
> + list = module;
> + }
> --
> 2.25.1
>
>
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>
--
Alexandre Belloni, co-owner and COO, Bootlin
Embedded Linux and Kernel engineering
https://bootlin.com
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2024-01-22 8:59 [PATCH v2] binutils: Add patch to fix CVE-2023-25584 Ashish Kumar Mishra
2024-01-23 22:17 ` Alexandre Belloni [this message]
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