# CVE-2024-26626: linux: In the Linux kernel, the following vulnerability has been resolved: ipmr: fix kernel panic when forwarding mcast pac... CVE-2024-26626 is fixed in 22 products on 1 platform, first by ALAS2023-2024-517, released February 15, 2024. It is not reported as exploited. Patch Radar priority: Routine. - Web page: https://patchblox.com/security/cve/CVE-2024-26626 - Priority: Routine - CVSS: 5.5 (medium) - EPSS: 0.0064 - CISA KEV: not listed - Exploited (vendor report): no - Publicly disclosed: no - Published: Feb 15, 2024 ## Description In the Linux kernel, the following vulnerability has been resolved: ipmr: fix kernel panic when forwarding mcast packets The stacktrace was: [ 86.305548] BUG: kernel NULL pointer dereference, address: 0000000000000092 [ 86.306815] #PF: supervisor read access in kernel mode [ 86.307717] #PF: error_code(0x0000) - not-present page [ 86.308624] PGD 0 P4D 0 [ 86.309091] Oops: 0000 [#1] PREEMPT SMP NOPTI [ 86.309883] CPU: 2 PID: 3139 Comm: pimd Tainted: G U 6.8.0-6wind-knet #1 [ 86.311027] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.11.1-0-g0551a4be2c-prebuilt.qemu-project.org 04/01/2014 [ 86.312728] RIP: 0010:ip_mr_forward (/build/work/knet/net/ipv4/ipmr.c:1985) [ 86.313399] Code: f9 1f 0f 87 85 03 00 00 48 8d 04 5b 48 8d 04 83 49 8d 44 c5 00 48 8b 40 70 48 39 c2 0f 84 d9 00 00 00 49 8b 46 58 48 83 e0 fe <80> b8 92 00 00 00 00 0f 84 55 ff ff ff 49 83 47 38 01 45 85 e4 0f [ 86.316565] RSP: 0018:ffffad21c0583ae0 EFLAGS: 00010246 [ 86.317497] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000 [ 86.318596] RDX: ffff9559cb46c000 RSI: 0000000000000000 RDI: 0000000000000000 [ 86.319627] RBP: ffffad21c0583b30 R08: 0000000000000000 R09: 0000000000000000 [ 86.320650] R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000001 [ 86.321672] R13: ffff9559c093a000 R14: ffff9559cc00b800 R15: ffff9559c09c1d80 [ 86.322873] FS: 00007f85db661980(0000) GS:ffff955a79d00000(0000) knlGS:0000000000000000 [ 86.324291] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 86.325314] CR2: 0000000000000092 CR3: 000000002f13a000 CR4: 0000000000350ef0 [ 86.326589] Call Trace: [ 86.327036] [ 86.327434] ? show_regs (/build/work/knet/arch/x86/kernel/dumpstack.c:479) [ 86.328049] ? __die (/build/work/knet/arch/x86/kernel/dumpstack.c:421 /build/work/knet/arch/x86/kernel/dumpstack.c:434) [ 86.328508] ? page_fault_oops (/build/work/knet/arch/x86/mm/fault.c:707) [ 86.329107] ? do_user_addr_fault (/build/work/knet/arch/x86/mm/fault.c:1264) [ 86.329756] ? srso_return_thunk (/build/work/knet/arch/x86/lib/retpoline.S:223) [ 86.330350] ? __irq_work_queue_local (/build/work/knet/kernel/irq_work.c:111 (discriminator 1)) [ 86.331013] ? exc_page_fault (/build/work/knet/./arch/x86/include/asm/paravirt.h:693 /build/work/knet/arch/x86/mm/fault.c:1515 /build/work/knet/arch/x86/mm/fault.c:1563) [ 86.331702] ? asm_exc_page_fault (/build/work/knet/./arch/x86/include/asm/idtentry.h:570) [ 86.332468] ? ip_mr_forward (/build/work/knet/net/ipv4/ipmr.c:1985) [ 86.333183] ? srso_return_thunk (/build/work/knet/arch/x86/lib/retpoline.S:223) [ 86.333920] ipmr_mfc_add (/build/work/knet/./include/linux/rcupdate.h:782 /build/work/knet/net/ipv4/ipmr.c:1009 /build/work/knet/net/ipv4/ipmr.c:1273) [ 86.334583] ? __pfx_ipmr_hash_cmp (/build/work/knet/net/ipv4/ipmr.c:363) [ 86.335357] ip_mroute_setsockopt (/build/work/knet/net/ipv4/ipmr.c:1470) [ 86.336135] ? srso_return_thunk (/build/work/knet/arch/x86/lib/retpoline.S:223) [ 86.336854] ? ip_mroute_setsockopt (/build/work/knet/net/ipv4/ipmr.c:1470) [ 86.337679] do_ip_setsockopt (/build/work/knet/net/ipv4/ip_sockglue.c:944) [ 86.338408] ? __pfx_unix_stream_read_actor (/build/work/knet/net/unix/af_unix.c:2862) [ 86.339232] ? srso_return_thunk (/build/work/knet/arch/x86/lib/retpoline.S:223) [ 86.339809] ? aa_sk_perm (/build/work/knet/security/apparmor/include/cred.h:153 /build/work/knet/security/apparmor/net.c:181) [ 86.340342] ip_setsockopt (/build/work/knet/net/ipv4/ip_sockglue.c:1415) [ 86.340859] raw_setsockopt (/build/work/knet/net/ipv4/raw.c:836) [ 86.341408] ? security_socket_setsockopt (/build/work/knet/security/security.c:4561 (discriminator 13)) [ 86.342116] sock_common_setsockopt (/build/work/knet/net/core/sock.c:3716) [ 86.342747] do_sock_setsockopt (/build/work/knet/net/socket.c:2313) [ 86.343363] __sys_setsockopt (/build/work/knet/./include/linux/file.h:32 /build/work/kn ---truncated--- ## Where it's fixed | Platform | Product | Fixed in | Fix | Released | |---|---|---|---|---| | Linux | bpftool amzn 2023 | 6.1.77-99.164.amzn2023 | [ALAS2023-2024-517](https://patchblox.com/security/data/fix/linux/alas2023-2024-517.md) | Feb 15, 2024 | | Linux | bpftool-debuginfo amzn 2023 | 6.1.77-99.164.amzn2023 | [ALAS2023-2024-517](https://patchblox.com/security/data/fix/linux/alas2023-2024-517.md) | Feb 15, 2024 | | Linux | kernel amzn 2023 | 6.1.77-99.164.amzn2023 | [ALAS2023-2024-517](https://patchblox.com/security/data/fix/linux/alas2023-2024-517.md) | Feb 15, 2024 | | Linux | kernel-debuginfo amzn 2023 | 6.1.77-99.164.amzn2023 | [ALAS2023-2024-517](https://patchblox.com/security/data/fix/linux/alas2023-2024-517.md) | Feb 15, 2024 | | Linux | kernel-debuginfo-common-aarch64 amzn 2023 | 6.1.77-99.164.amzn2023 | [ALAS2023-2024-517](https://patchblox.com/security/data/fix/linux/alas2023-2024-517.md) | Feb 15, 2024 | | Linux | kernel-debuginfo-common-x86_64 amzn 2023 | 6.1.77-99.164.amzn2023 | [ALAS2023-2024-517](https://patchblox.com/security/data/fix/linux/alas2023-2024-517.md) | Feb 15, 2024 | | Linux | kernel-devel amzn 2023 | 6.1.77-99.164.amzn2023 | [ALAS2023-2024-517](https://patchblox.com/security/data/fix/linux/alas2023-2024-517.md) | Feb 15, 2024 | | Linux | kernel-headers amzn 2023 | 6.1.77-99.164.amzn2023 | [ALAS2023-2024-517](https://patchblox.com/security/data/fix/linux/alas2023-2024-517.md) | Feb 15, 2024 | | Linux | kernel-libbpf amzn 2023 | 6.1.77-99.164.amzn2023 | [ALAS2023-2024-517](https://patchblox.com/security/data/fix/linux/alas2023-2024-517.md) | Feb 15, 2024 | | Linux | kernel-libbpf-devel amzn 2023 | 6.1.77-99.164.amzn2023 | [ALAS2023-2024-517](https://patchblox.com/security/data/fix/linux/alas2023-2024-517.md) | Feb 15, 2024 | | Linux | kernel-libbpf-static amzn 2023 | 6.1.77-99.164.amzn2023 | [ALAS2023-2024-517](https://patchblox.com/security/data/fix/linux/alas2023-2024-517.md) | Feb 15, 2024 | | Linux | kernel-livepatch-6.1.77-99.164 amzn 2023 | 1.0-0.amzn2023 | [ALAS2023-2024-517](https://patchblox.com/security/data/fix/linux/alas2023-2024-517.md) | Feb 15, 2024 | | Linux | kernel-modules-extra amzn 2023 | 6.1.77-99.164.amzn2023 | [ALAS2023-2024-517](https://patchblox.com/security/data/fix/linux/alas2023-2024-517.md) | Feb 15, 2024 | | Linux | kernel-modules-extra-common amzn 2023 | 6.1.77-99.164.amzn2023 | [ALAS2023-2024-517](https://patchblox.com/security/data/fix/linux/alas2023-2024-517.md) | Feb 15, 2024 | | Linux | kernel-tools amzn 2023 | 6.1.77-99.164.amzn2023 | [ALAS2023-2024-517](https://patchblox.com/security/data/fix/linux/alas2023-2024-517.md) | Feb 15, 2024 | | Linux | kernel-tools-debuginfo amzn 2023 | 6.1.77-99.164.amzn2023 | [ALAS2023-2024-517](https://patchblox.com/security/data/fix/linux/alas2023-2024-517.md) | Feb 15, 2024 | | Linux | kernel-tools-devel amzn 2023 | 6.1.77-99.164.amzn2023 | [ALAS2023-2024-517](https://patchblox.com/security/data/fix/linux/alas2023-2024-517.md) | Feb 15, 2024 | | Linux | linux Debian 12.15 (bookworm) | 6.1.82-1 | [DEBIAN-CVE-2024-26626](https://patchblox.com/security/data/fix/linux/debian-cve-2024-26626.md) | Mar 6, 2024 | | Linux | linux Debian 13.5 (trixie) | 6.7.7-1 | [DEBIAN-CVE-2024-26626](https://patchblox.com/security/data/fix/linux/debian-cve-2024-26626.md) | Mar 6, 2024 | | Linux | linux Debian 14 | 6.7.7-1 | [DEBIAN-CVE-2024-26626](https://patchblox.com/security/data/fix/linux/debian-cve-2024-26626.md) | Mar 6, 2024 | | Linux | perf amzn 2023 | 6.1.77-99.164.amzn2023 | [ALAS2023-2024-517](https://patchblox.com/security/data/fix/linux/alas2023-2024-517.md) | Feb 15, 2024 | | Linux | perf-debuginfo amzn 2023 | 6.1.77-99.164.amzn2023 | [ALAS2023-2024-517](https://patchblox.com/security/data/fix/linux/alas2023-2024-517.md) | Feb 15, 2024 | | Linux | python3-perf amzn 2023 | 6.1.77-99.164.amzn2023 | [ALAS2023-2024-517](https://patchblox.com/security/data/fix/linux/alas2023-2024-517.md) | Feb 15, 2024 | | Linux | python3-perf-debuginfo amzn 2023 | 6.1.77-99.164.amzn2023 | [ALAS2023-2024-517](https://patchblox.com/security/data/fix/linux/alas2023-2024-517.md) | Feb 15, 2024 | --- Data as of 2026-11-08T19:12:23Z UTC. 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