From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-alma10-1.taild15c8.ts.net [100.103.45.18]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 2C1AA499F13 for ; Fri, 25 Sep 2026 10:40:34 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=100.103.45.18 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1790332836; cv=none; b=NbLK8fLswQKUXuAA+K4obx383O3j/x2MaHsO4SoQY3HFoQ55p3hhyOMDQUbDklx4+Xn4pKjzVbbNHQMM/LWKtItXyimgMGJVYfMnDOluD4u50LC5iwPL3Wh1+lhRuFskBgqWM9Di9F/s9Ub9nEO8oFFOTmBcJYPHsL/aVStteRo= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1790332836; c=relaxed/simple; bh=9RjORPt36XUR/jU6RFIybGOFV+1W7YL1Mzs7ITVAAaQ=; h=From:To:Cc:Subject:Date:Message-ID:MIME-Version; b=L68l3t21b4YY9y93zWyIGJhRGbgBRPjDI7PkVxGZRsRTbWY47kUqr+7IArwiJKsuUZdPKOh1j97P0B1L6tZR3AgA8yycQNhI+P5dxcIblOYlvTydTMeQhcVKdRrICxYQgJd+0mr1r4EI7q21EbWIR8AC+dP9eAnfrMzWlBbSYYk= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=c+gPjggW; arc=none smtp.client-ip=100.103.45.18 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b="c+gPjggW" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 4FF361F000FF; Fri, 25 Sep 2026 10:40:34 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linuxfoundation.org; s=korg; t=1790332834; bh=dmDAI5JSjlwoNnCpxfBoHrw3g7Gj+xFIwzaqNgyCAhU=; h=From:To:Cc:Subject:Date:Reply-To; b=c+gPjggWBkEutpA/WRGCzCmGM44F/44YzKaB0Bsf/E4dZHoWJH9ATnDoNVKaCdcXH b0EJCwlkJ8+mekIhM5bQNZC9AWPuxjKJOjMrE30/DuVim5YdlbfaVzKbRjyC+t+Fu7 q6Of4Pd7DKdUjNZCQN1xgFnYXLX7IuHuy7LAgF+c= From: Greg Kroah-Hartman To: linux-cve-announce@vger.kernel.org Cc: Greg Kroah-Hartman Subject: CVE-2026-98105: net: ethernet: oa_tc6: Improve the error recovery Date: Fri, 25 Sep 2026 12:39:12 +0200 Message-ID: <2026092510-CVE-2026-98105-e3e0@gregkh> X-Mailer: git-send-email 2.55.0 Reply-To: , Precedence: bulk X-Mailing-List: linux-cve-announce@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Developer-Signature: v=1; a=openpgp-sha256; l=3172; i=gregkh@linuxfoundation.org; h=from:subject:message-id; bh=B3Q9mnr2qNWQhwo9+OCVpdAxX9OiAUJf7fO3QDgXVcQ=; b=owGbwMvMwCRo6H6F97bub03G02pJDFnb/P2Oaybvubu+9pDsi3YtwROMiT3H2OIfhWjHc01i3 i3yIq21I5aFQZCJQVZMkeXLNp6j+ysOKXoZ2p6GmcPKBDKEgYtTACZyPY1hwZzj02dyTWrr0s8+ KxGk0vb+fnHgCYYFF5nvF+zanhF8hSsv6vwt8/I7V2c9AgA= X-Developer-Key: i=gregkh@linuxfoundation.org; a=openpgp; fpr=F4B60CC5BF78C2214A313DCB3147D40DDB2DFB29 Content-Transfer-Encoding: 8bit From: Greg Kroah-Hartman Description =========== In the Linux kernel, the following vulnerability has been resolved: net: ethernet: oa_tc6: Improve the error recovery When oversubscribed traffic causes lot of buffer overflow errors, probably due to loss of data chunks, driver fails to find a data chunk with end_valid bit set, before it runs out of sk buffer space. As a result, assert is seen during skb_put. Now, check is made if skb buffer has enough tailroom for the incoming data before accepting. If there is no room, current frame is abandoned and it will start looking for a data chunk with start_valid bit, that is a new frame. SK buffer allocation error is considered as recoverable error. rx_buf_overflow flag is too specific and no longer the only condition this flag is used for. Therefore it is renamed as wait_until_start_valid. This is more appropriate as this flag is used to look for the next data chunk with SV bit set, after failures like buffer overflow, buffer allocation failure, skb pointer validity besides buffer overflow error. Not writing to status0 if it reads 0. The Linux kernel CVE team has assigned CVE-2026-98105 to this issue. Affected and fixed versions =========================== Issue introduced in 6.12 with commit d70a0d8f2f2d1b9bb6e3e9dfed25ae3ca3303770 and fixed in 6.12.111 with commit d33003e752f25c385f2cf21964123582a44f6818 Issue introduced in 6.12 with commit d70a0d8f2f2d1b9bb6e3e9dfed25ae3ca3303770 and fixed in 6.18.53 with commit 9d3f6e714d5f8b728837f31bbe865b64cfd3216a Issue introduced in 6.12 with commit d70a0d8f2f2d1b9bb6e3e9dfed25ae3ca3303770 and fixed in 7.2.7 with commit b89770d493749d7c3b8649996e1089719b4eff8d Issue introduced in 6.12 with commit d70a0d8f2f2d1b9bb6e3e9dfed25ae3ca3303770 and fixed in 7.3-rc2 with commit 172c974113bffe5723b80b1acac17593bb50513c Please see https://www.kernel.org for a full list of currently supported kernel versions by the kernel community. Unaffected versions might change over time as fixes are backported to older supported kernel versions. The official CVE entry at https://cve.org/CVERecord/?id=CVE-2026-98105 will be updated if fixes are backported, please check that for the most up to date information about this issue. Affected files ============== The file(s) affected by this issue are: drivers/net/ethernet/oa_tc6.c Mitigation ========== The Linux kernel CVE team recommends that you update to the latest stable kernel version for this, and many other bugfixes. Individual changes are never tested alone, but rather are part of a larger kernel release. Cherry-picking individual commits is not recommended or supported by the Linux kernel community at all. If however, updating to the latest release is impossible, the individual changes to resolve this issue can be found at these commits: https://git.kernel.org/stable/c/d33003e752f25c385f2cf21964123582a44f6818 https://git.kernel.org/stable/c/9d3f6e714d5f8b728837f31bbe865b64cfd3216a https://git.kernel.org/stable/c/b89770d493749d7c3b8649996e1089719b4eff8d https://git.kernel.org/stable/c/172c974113bffe5723b80b1acac17593bb50513c