[FIPS 9.2 Compliant] CVEs: CVE-2023-4623, CVE-2025-21785 #239
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jira VULN-8855 cve CVE-2023-4623 commit-author Budimir Markovic <[email protected]> commit b3d26c5 HFSC assumes that inner classes have an fsc curve, but it is currently possible for classes without an fsc curve to become parents. This leads to bugs including a use-after-free. Don't allow non-root classes without HFSC_FSC to become parents. Fixes: 1da177e ("Linux-2.6.12-rc2") Reported-by: Budimir Markovic <[email protected]> Signed-off-by: Budimir Markovic <[email protected]> Acked-by: Jamal Hadi Salim <[email protected]> Link: https://lore.kernel.org/r/[email protected] Signed-off-by: Jakub Kicinski <[email protected]> (cherry picked from commit b3d26c5) Signed-off-by: Jonathan Maple <[email protected]>
jira VULN-8855 cve CVE-2023-4623 commit-author Pedro Tammela <[email protected]> commit a13b67c Christian Theune says: I upgraded from 6.1.38 to 6.1.55 this morning and it broke my traffic shaping script, leaving me with a non-functional uplink on a remote router. A 'rt' curve cannot be used as a inner curve (parent class), but we were allowing such configurations since the qdisc was introduced. Such configurations would trigger a UAF as Budimir explains: The parent will have vttree_insert() called on it in init_vf(), but will not have vttree_remove() called on it in update_vf() because it does not have the HFSC_FSC flag set. The qdisc always assumes that inner classes have the HFSC_FSC flag set. This is by design as it doesn't make sense 'qdisc wise' for an 'rt' curve to be an inner curve. Budimir's original patch disallows users to add classes with a 'rt' parent, but this is too strict as it breaks users that have been using 'rt' as a inner class. Another approach, taken by this patch, is to upgrade the inner 'rt' into a 'sc', warning the user in the process. It avoids the UAF reported by Budimir while also being more permissive to bad scripts/users/code using 'rt' as a inner class. Users checking the `tc class ls [...]` or `tc class get [...]` dumps would observe the curve change and are potentially breaking with this change. v1->v2: https://lore.kernel.org/all/[email protected]/ - Correct 'Fixes' tag and merge with revert (Jakub) Cc: Christian Theune <[email protected]> Cc: Budimir Markovic <[email protected]> Fixes: b3d26c5 ("net/sched: sch_hfsc: Ensure inner classes have fsc curve") Signed-off-by: Pedro Tammela <[email protected]> Acked-by: Jamal Hadi Salim <[email protected]> Link: https://lore.kernel.org/r/[email protected] Signed-off-by: Jakub Kicinski <[email protected]> (cherry picked from commit a13b67c) Signed-off-by: Jonathan Maple <[email protected]>
jira VULN-54132 cve CVE-2025-21785 commit-author Radu Rendec <[email protected]> commit 875d742 The loop that detects/populates cache information already has a bounds check on the array size but does not account for cache levels with separate data/instructions cache. Fix this by incrementing the index for any populated leaf (instead of any populated level). Fixes: 5d425c1 ("arm64: kernel: add support for cpu cache information") Signed-off-by: Radu Rendec <[email protected]> Link: https://lore.kernel.org/r/[email protected] Signed-off-by: Will Deacon <[email protected]> (cherry picked from commit 875d742) Signed-off-by: Jonathan Maple <[email protected]>
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Based off previous CVEs on standard CIQ LTS kernel:
The above PR Commits and the commits in this PR are all Clean CherryPicks
BUILD
Kernel SelfTests
Change in Kselftests, I'm no longer using the RPM but the last one was with the RPM.