[ciqlts9_2] Multiple patches tested (2 commits) - #1513
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August 5, 2026 07:27
jira VULN-183029 cve CVE-2026-31684 commit-author Ruide Cao <caoruide123@gmail.com> commit c842743 tcf_csum_act() walks nested VLAN headers directly from skb->data when an skb still carries in-payload VLAN tags. The current code reads vlan->h_vlan_encapsulated_proto and then pulls VLAN_HLEN bytes without first ensuring that the full VLAN header is present in the linear area. If only part of an inner VLAN header is linearized, accessing h_vlan_encapsulated_proto reads past the linear area, and the following skb_pull(VLAN_HLEN) may violate skb invariants. Fix this by requiring pskb_may_pull(skb, VLAN_HLEN) before accessing and pulling each nested VLAN header. If the header still is not fully available, drop the packet through the existing error path. Fixes: 2ecba2d ("net: sched: act_csum: Fix csum calc for tagged packets") Reported-by: Yifan Wu <yifanwucs@gmail.com> Reported-by: Juefei Pu <tomapufckgml@gmail.com> Co-developed-by: Yuan Tan <yuantan098@gmail.com> Signed-off-by: Yuan Tan <yuantan098@gmail.com> Suggested-by: Xin Liu <bird@lzu.edu.cn> Tested-by: Ren Wei <enjou1224z@gmail.com> Signed-off-by: Ruide Cao <caoruide123@gmail.com> Signed-off-by: Ren Wei <n05ec@lzu.edu.cn> Reviewed-by: Simon Horman <horms@kernel.org> Link: https://patch.msgid.link/22df2fcb49f410203eafa5d97963dd36089f4ecf.1774892775.git.caoruide123@gmail.com Signed-off-by: Jakub Kicinski <kuba@kernel.org> (cherry picked from commit c842743) Signed-off-by: CIQ Kernel Automation <ciq_kernel_automation@ciq.com>
…nit_with_funcs() jira VULN-187129 cve CVE-2026-46209 commit-author Ashutosh Desai <ashutoshdesai993@gmail.com> commit 3d4c226 drm_gem_fb_init_with_funcs() computes sub-sampled plane dimensions using plain integer division: unsigned int width = mode_cmd->width / (i ? info->hsub : 1); unsigned int height = mode_cmd->height / (i ? info->vsub : 1); However, the ioctl-level framebuffer_check() in drm_framebuffer.c uses drm_format_info_plane_width/height() which round up dimensions via DIV_ROUND_UP(). This inconsistency corrupts the subsequent GEM object size check for certain pixel format and dimension combinations. For example, with NV12 (vsub=2) and a 1-pixel-tall framebuffer the GEM size validation path sees height=0 instead of height=1. The expression (height - 1) then wraps to UINT_MAX as an unsigned int, causing min_size to overflow and wrap back to a small value. A tiny GEM object therefore passes the size guard, yet when the GPU accesses the chroma plane it will read or write memory beyond the object's bounds. Fix by replacing the open-coded divisions with drm_format_info_plane_width() and drm_format_info_plane_height(), which use DIV_ROUND_UP() and match the calculation already used in framebuffer_check(). Fixes: 4c3dbb2 ("drm: Add GEM backed framebuffer library") Cc: stable@vger.kernel.org # v4.14+ Reviewed-by: Thomas Zimmermann <tzimmermann@suse.de> Signed-off-by: Ashutosh Desai <ashutoshdesai993@gmail.com> Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de> Link: https://patch.msgid.link/20260420013637.457751-1-ashutoshdesai993@gmail.com (cherry picked from commit 3d4c226) Signed-off-by: CIQ Kernel Automation <ciq_kernel_automation@ciq.com>
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