qfq_change_class in net/sched/sch_qfq.c in the Linux kernel before 6.2.13 allows an out-of-bounds write because lmax can exceed QFQ_MIN_LMAX.
Fix
Patch, vendor advisory and mitigation references on NVD 6
- https://cdn.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.2.13 Mailing List, Patch
- https://github.com/torvalds/linux/commit/3037933448f60f9acb705997eae62013ecb81e0d Patch
- https://www.spinics.net/lists/stable-commits/msg294885.html Mailing List, Patch
- https://cdn.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.2.13 Mailing List, Patch
- https://github.com/torvalds/linux/commit/3037933448f60f9acb705997eae62013ecb81e0d Patch
- https://www.spinics.net/lists/stable-commits/msg294885.html Mailing List, Patch
Every line above is quoted from NVD, CISA, Microsoft, the vendor's own advisory or DISA; nothing is generated.
Change history 1
- First seenCVSS 7.8 · linuxNVD modified 2026-10-14 23:17
Affected (CPE criteria) 1
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
References 20
- http://packetstormsecurity.com/files/173087/Kernel-Live-Patch-Security-Notice-LSN-0095-1.html Third Party Advisory, VDB Entry
- http://packetstormsecurity.com/files/173757/Kernel-Live-Patch-Security-Notice-LSN-0096-1.html Third Party Advisory, VDB Entry
- http://packetstormsecurity.com/files/175963/Kernel-Live-Patch-Security-Notice-LSN-0099-1.html
- https://cdn.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.2.13 Mailing List, Patch
- https://github.com/torvalds/linux/commit/3037933448f60f9acb705997eae62013ecb81e0d Patch
- https://lists.debian.org/debian-lts-announce/2023/06/msg00008.html Mailing List, Third Party Advisory
- https://security.netapp.com/advisory/ntap-20230609-0001/ Third Party Advisory
- https://www.debian.org/security/2023/dsa-5402 VDB Entry
- https://www.spinics.net/lists/stable-commits/msg294885.html Mailing List, Patch
- http://packetstormsecurity.com/files/173087/Kernel-Live-Patch-Security-Notice-LSN-0095-1.html Third Party Advisory, VDB Entry
- http://packetstormsecurity.com/files/173757/Kernel-Live-Patch-Security-Notice-LSN-0096-1.html Third Party Advisory, VDB Entry
- http://packetstormsecurity.com/files/175963/Kernel-Live-Patch-Security-Notice-LSN-0099-1.html
- https://cdn.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.2.13 Mailing List, Patch
- https://github.com/torvalds/linux/commit/3037933448f60f9acb705997eae62013ecb81e0d Patch
- https://lists.debian.org/debian-lts-announce/2023/06/msg00008.html Mailing List, Third Party Advisory
- https://security.netapp.com/advisory/ntap-20230609-0001/ Third Party Advisory
- https://www.debian.org/security/2023/dsa-5402 VDB Entry
- https://www.spinics.net/lists/stable-commits/msg294885.html Mailing List, Patch
- https://cert-portal.siemens.com/productcert/html/ssa-794697.html
- https://cert-portal.siemens.com/productcert/html/ssa-806742.html