[ciqlts9_6] Multiple patches tested (5 commits)#1134
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jira VULN-176248 cve CVE-2026-23144 commit-author SeongJae Park <sj@kernel.org> commit 9814cc8 When a context DAMON sysfs directory setup is failed after setup of attrs/ directory, subdirectories of attrs/ directory are not cleaned up. As a result, DAMON sysfs interface is nearly broken until the system reboots, and the memory for the unremoved directory is leaked. Cleanup the directories under such failures. Link: https://lkml.kernel.org/r/20251225023043.18579-3-sj@kernel.org Fixes: c951cd3 ("mm/damon: implement a minimal stub for sysfs-based DAMON interface") Signed-off-by: SeongJae Park <sj@kernel.org> Cc: chongjiapeng <jiapeng.chong@linux.alibaba.com> Cc: <stable@vger.kernel.org> # 5.18.x Signed-off-by: Andrew Morton <akpm@linux-foundation.org> (cherry picked from commit 9814cc8) Signed-off-by: CIQ Kernel Automation <ciq_kernel_automation@ciq.com>
…ount() jira VULN-176315 cve CVE-2026-23193 commit-author Maurizio Lombardi <mlombard@redhat.com> commit 84dc603 In iscsit_dec_session_usage_count(), the function calls complete() while holding the sess->session_usage_lock. Similar to the connection usage count logic, the waiter signaled by complete() (e.g., in the session release path) may wake up and free the iscsit_session structure immediately. This creates a race condition where the current thread may attempt to execute spin_unlock_bh() on a session structure that has already been deallocated, resulting in a KASAN slab-use-after-free. To resolve this, release the session_usage_lock before calling complete() to ensure all dereferences of the sess pointer are finished before the waiter is allowed to proceed with deallocation. Signed-off-by: Maurizio Lombardi <mlombard@redhat.com> Reported-by: Zhaojuan Guo <zguo@redhat.com> Reviewed-by: Mike Christie <michael.christie@oracle.com> Link: https://patch.msgid.link/20260112165352.138606-3-mlombard@redhat.com Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com> (cherry picked from commit 84dc603) Signed-off-by: CIQ Kernel Automation <ciq_kernel_automation@ciq.com>
jira VULN-176131 cve-pre CVE-2026-23204 commit-author Eric Dumazet <edumazet@google.com> commit 13e00fd upstream-diff | Adjusted context because skb_pointer_if_linear does not exist. Introduced in 6f5a630 ("bpf, net: Introduce skb_pointer_if_linear().") This variant of skb_header_pointer() should be used in contexts where @offset argument is user-controlled and could be negative. Negative offsets are supported, as long as the zone starts between skb->head and skb->data. Signed-off-by: Eric Dumazet <edumazet@google.com> Link: https://patch.msgid.link/20260128141539.3404400-2-edumazet@google.com Signed-off-by: Jakub Kicinski <kuba@kernel.org> (cherry picked from commit 13e00fd) Signed-off-by: Roxana Nicolescu <rnicolescu@ciq.com>
jira VULN-176131 cve CVE-2026-23204 commit-author Eric Dumazet <edumazet@google.com> commit cabd1a9 skb_header_pointer() does not fully validate negative @offset values. Use skb_header_pointer_careful() instead. GangMin Kim provided a report and a repro fooling u32_classify(): BUG: KASAN: slab-out-of-bounds in u32_classify+0x1180/0x11b0 net/sched/cls_u32.c:221 Fixes: fbc2e7d ("cls_u32: use skb_header_pointer() to dereference data safely") Reported-by: GangMin Kim <km.kim1503@gmail.com> Closes: https://lore.kernel.org/netdev/CANn89iJkyUZ=mAzLzC4GdcAgLuPnUoivdLaOs6B9rq5_erj76w@mail.gmail.com/T/ Signed-off-by: Eric Dumazet <edumazet@google.com> Link: https://patch.msgid.link/20260128141539.3404400-3-edumazet@google.com Signed-off-by: Jakub Kicinski <kuba@kernel.org> (cherry picked from commit cabd1a9) Signed-off-by: CIQ Kernel Automation <ciq_kernel_automation@ciq.com>
…activate() jira VULN-176074 cve CVE-2026-23111 commit-author Andrew Fasano <andrew.fasano@nist.gov> commit f41c5d1 nft_map_catchall_activate() has an inverted element activity check compared to its non-catchall counterpart nft_mapelem_activate() and compared to what is logically required. nft_map_catchall_activate() is called from the abort path to re-activate catchall map elements that were deactivated during a failed transaction. It should skip elements that are already active (they don't need re-activation) and process elements that are inactive (they need to be restored). Instead, the current code does the opposite: it skips inactive elements and processes active ones. Compare the non-catchall activate callback, which is correct: nft_mapelem_activate(): if (nft_set_elem_active(ext, iter->genmask)) return 0; /* skip active, process inactive */ With the buggy catchall version: nft_map_catchall_activate(): if (!nft_set_elem_active(ext, genmask)) continue; /* skip inactive, process active */ The consequence is that when a DELSET operation is aborted, nft_setelem_data_activate() is never called for the catchall element. For NFT_GOTO verdict elements, this means nft_data_hold() is never called to restore the chain->use reference count. Each abort cycle permanently decrements chain->use. Once chain->use reaches zero, DELCHAIN succeeds and frees the chain while catchall verdict elements still reference it, resulting in a use-after-free. This is exploitable for local privilege escalation from an unprivileged user via user namespaces + nftables on distributions that enable CONFIG_USER_NS and CONFIG_NF_TABLES. Fix by removing the negation so the check matches nft_mapelem_activate(): skip active elements, process inactive ones. Fixes: 628bd3e ("netfilter: nf_tables: drop map element references from preparation phase") Signed-off-by: Andrew Fasano <andrew.fasano@nist.gov> Signed-off-by: Florian Westphal <fw@strlen.de> (cherry picked from commit f41c5d1) Signed-off-by: CIQ Kernel Automation <ciq_kernel_automation@ciq.com>
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🤖 Validation Checks In Progress Workflow run: https://github.com/ctrliq/kernel-src-tree/actions/runs/24848476061 |
🔍 Interdiff Analysis
################################################################################
! REJECTED PATCH2 HUNKS - could not be compared; manual review needed !
################################################################################
--- b/include/linux/skbuff.h
+++ b/include/linux/skbuff.h
@@ -4301,6 +4301,18 @@
skb_headlen(skb), buffer);
}
+/* Variant of skb_header_pointer() where @offset is user-controlled
+ * and potentially negative.
+ */
+static inline void * __must_check
+skb_header_pointer_careful(const struct sk_buff *skb, int offset,
+ int len, void *buffer)
+{
+ if (unlikely(offset < 0 && -offset > skb_headroom(skb)))
+ return NULL;
+ return skb_header_pointer(skb, offset, len, buffer);
+}
+
static inline void * __must_check
skb_pointer_if_linear(const struct sk_buff *skb, int offset, int len)
{
================================================================================
* CONTEXT DIFFERENCES - surrounding code differences between the patches *
================================================================================
--- b/include/linux/skbuff.h
+++ b/include/linux/skbuff.h
@@ -4023,6 +4023,6 @@
skb_headlen(skb), buffer);
}
-/**
- * skb_needs_linearize - check if we need to linearize a given skb
- * depending on the given device features.
+static inline void * __must_check
+skb_pointer_if_linear(const struct sk_buff *skb, int offset, int len)
+{This is an automated interdiff check for backported commits. |
|
✅ Validation checks completed successfully View full results: https://github.com/ctrliq/kernel-src-tree/actions/runs/24848476061 |
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