CVE-2024-26852

HIGHNVD 7.87.8—
EchelonGraph scoreMEDIUM confidence

Score 7.8 from GitHub Security Advisory (severity: HIGH) published 2024-04-17. NVD baseline CVSS 7.8; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
7.8
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS: 0%CVSS: 7.8Exploit: NoneExposed: 0

A fix is available — apply it.

In the Linux kernel, the following vulnerability has been resolved:

net/ipv6: avoid possible UAF in ip6_route_mpath_notify()

syzbot found another use-after-free in ip6_route_mpath_notify() [1]

Commit f7225172f25a ("net/ipv6: prevent use after free in ip6_route_mpath_notify") was not able to fix the root cause.

We need to defer the fib6_info_release() calls after ip6_route_mpath_notify(), in the cleanup phase.

[1] BUG: KASAN: slab-use-after-free in rt6_fill_node+0x1460/0x1ac0 Read of size 4 at addr ffff88809a07fc64 by task syz-executor.2/23037

CPU: 0 PID: 23037 Comm: syz-executor.2 Not tainted 6.8.0-rc4-syzkaller-01035-gea7f3cfaa588 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/25/2024 Call Trace: __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0x1e7/0x2e0 lib/dump_stack.c:106 print_address_description mm/kasan/report.c:377 [inline] print_report+0x167/0x540 mm/kasan/report.c:488 kasan_report+0x142/0x180 mm/kasan/report.c:601 rt6_fill_node+0x1460/0x1ac0 inet6_rt_notify+0x13b/0x290 net/ipv6/route.c:6184 ip6_route_mpath_notify net/ipv6/route.c:5198 [inline] ip6_route_multipath_add net/ipv6/route.c:5404 [inline] inet6_rtm_newroute+0x1d0f/0x2300 net/ipv6/route.c:5517 rtnetlink_rcv_msg+0x885/0x1040 net/core/rtnetlink.c:6597 netlink_rcv_skb+0x1e3/0x430 net/netlink/af_netlink.c:2543 netlink_unicast_kernel net/netlink/af_netlink.c:1341 [inline] netlink_unicast+0x7ea/0x980 net/netlink/af_netlink.c:1367 netlink_sendmsg+0xa3b/0xd70 net/netlink/af_netlink.c:1908 sock_sendmsg_nosec net/socket.c:730 [inline] __sock_sendmsg+0x221/0x270 net/socket.c:745 ____sys_sendmsg+0x525/0x7d0 net/socket.c:2584 ___sys_sendmsg net/socket.c:2638 [inline] __sys_sendmsg+0x2b0/0x3a0 net/socket.c:2667 do_syscall_64+0xf9/0x240 entry_SYSCALL_64_after_hwframe+0x6f/0x77 RIP: 0033:0x7f73dd87dda9 Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 e1 20 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b0 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007f73de6550c8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 00007f73dd9ac050 RCX: 00007f73dd87dda9 RDX: 0000000000000000 RSI: 0000000020000140 RDI: 0000000000000005 RBP: 00007f73dd8ca47a R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 000000000000006e R14: 00007f73dd9ac050 R15: 00007ffdbdeb7858

Allocated by task 23037: kasan_save_stack mm/kasan/common.c:47 [inline] kasan_save_track+0x3f/0x80 mm/kasan/common.c:68 poison_kmalloc_redzone mm/kasan/common.c:372 [inline] __kasan_kmalloc+0x98/0xb0 mm/kasan/common.c:389 kasan_kmalloc include/linux/kasan.h:211 [inline] __do_kmalloc_node mm/slub.c:3981 [inline] __kmalloc+0x22e/0x490 mm/slub.c:3994 kmalloc include/linux/slab.h:594 [inline] kzalloc include/linux/slab.h:711 [inline] fib6_info_alloc+0x2e/0xf0 net/ipv6/ip6_fib.c:155 ip6_route_info_create+0x445/0x12b0 net/ipv6/route.c:3758 ip6_route_multipath_add net/ipv6/route.c:5298 [inline] inet6_rtm_newroute+0x744/0x2300 net/ipv6/route.c:5517 rtnetlink_rcv_msg+0x885/0x1040 net/core/rtnetlink.c:6597 netlink_rcv_skb+0x1e3/0x430 net/netlink/af_netlink.c:2543 netlink_unicast_kernel net/netlink/af_netlink.c:1341 [inline] netlink_unicast+0x7ea/0x980 net/netlink/af_netlink.c:1367 netlink_sendmsg+0xa3b/0xd70 net/netlink/af_netlink.c:1908 sock_sendmsg_nosec net/socket.c:730 [inline] __sock_sendmsg+0x221/0x270 net/socket.c:745 ____sys_sendmsg+0x525/0x7d0 net/socket.c:2584 ___sys_sendmsg net/socket.c:2638 [inline] __sys_sendmsg+0x2b0/0x3a0 net/socket.c:2667 do_syscall_64+0xf9/0x240 entry_SYSCALL_64_after_hwframe+0x6f/0x77

Freed by task 16: kasan_save_stack mm/kasan/common.c:47 [inline] kasan_save_track+0x3f/0x80 mm/kasan/common.c:68 kasan_save_free_info+0x4e/0x60 mm/kasan/generic.c:640 poison_slab_object+0xa6/0xe0 m ---truncated---

CVSS v3
7.8
EG Score
7.8(medium)
EG Risk
35(Track)
EG Risk 35/100SSVC: Track

EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).

How it’s computed
Severity78% × 45%
Exploitation0% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS
18.8%
KEV
Not listed

Published

April 17, 2024

Last Modified

May 12, 2026

References (19)

Vendor Advisories for CVE-2024-26852(5)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

Patch Availability(23)

Vendor / EcosystemFixed in / PatchReleasedSource
ubuntulinux-tools-azure-lts-22.04 (5.15.0.1066.64) @ jammy2026-05-22ubuntu
ubuntulinux-virtual-hwe-20.04-edge (5.15.0.113.123~20.04.1) @ focal2026-05-22ubuntu
ubuntulinux-tools-ibm-edge (5.15.0.1057.60~20.04.1) @ focal2026-05-22ubuntu
ubuntulinux-virtual-hwe-18.04-edge (5.4.0.189.187) @ focal2026-05-22ubuntu
ubuntulinux-virtual-hwe-18.04-edge (5.4.0.189.209~18.04.1) @ bionic2026-05-22ubuntu
ubuntulinux-xilinx-zynqmp-tools-5.4.0-1047 (5.4.0-1047.51) @ focal2026-05-22ubuntu
ubuntulinux-tools-raspi2-hwe-18.04-edge (5.4.0.1112.142) @ focal2026-05-22ubuntu
ubuntulinux-tools-iot (5.4.0.1040.38) @ focal2026-05-22ubuntu
ubuntulinux-tools-raspi-nolpae (5.15.0.1058.56) @ jammy2026-05-22ubuntu
ubuntulinux-tools-lowlatency-hwe-20.04-edge (5.15.0.110.120~20.04.1) @ focal2026-05-22ubuntu
ubuntulinux-tools-kvm (5.15.0.1060.56) @ jammy2026-05-22ubuntu
ubuntulinux-tools-oracle-lts-22.04 (5.15.0.1061.57) @ jammy2026-05-22ubuntu
ubuntulinux-tools-intel-iotg-edge (5.15.0.1058.64~20.04.1) @ focal2026-05-22ubuntu
ubuntulinux-tools-aws-lts-22.04 (5.15.0.1063.63) @ jammy2026-05-22ubuntu
ubuntulinux-tools-nvidia-lowlatency (5.15.0.1058.58) @ jammy2026-05-22ubuntu
redhatkernel-0:4.18.0-477.70.1.el8_82024-09-03redhat
redhatkernel-rt-0:4.18.0-553.16.1.rt7.357.el8_102024-08-08redhat
redhatkernel-0:4.18.0-553.16.1.el8_102024-08-08redhat
redhatkernel-0:5.14.0-427.28.1.el9_42024-07-31redhat
redhatkernel-0:4.18.0-372.113.1.el8_62024-07-29redhat
redhatkernel-rt-0:5.14.0-284.73.1.rt14.358.el9_22024-07-15redhat
redhatkernel-0:5.14.0-284.73.1.el9_22024-07-15redhat
linuxKernel @ 4.19.310—osv

Patches are aggregated from vendor advisories (Red Hat, Microsoft, Cisco, GitHub) and package ecosystems (OSV, GHSA). Multiple rows for the same upstream release have been deduplicated.

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Additional Vendor Advisories

(17)

Vendors that published advisories for this CVE beyond the curated set above. Broader coverage but minimal per-row detail — click through for the original advisory.

Data Freshness Timeline

(refreshed 9× in last 7d / 45× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

Showing the most recent 100 of 127 total refreshes for this CVE.

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Frequently asked(5)

What is CVE-2024-26852?
CVE-2024-26852 is a high vulnerability published on April 17, 2024. In the Linux kernel, the following vulnerability has been resolved: net/ipv6: avoid possible UAF in ip6routempath_notify() syzbot found another use-after-free in ip6routempath_notify() [1] Commit f7225172f25a ("net/ipv6: prevent use after free in ip6routempath_notify") was not able to fix the root…
When was CVE-2024-26852 disclosed?
CVE-2024-26852 was first published in the National Vulnerability Database on April 17, 2024, with the most recent update on May 12, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2024-26852 actively exploited?
CVE-2024-26852 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 18.8% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2024-26852?
CVE-2024-26852 has a CVSS v3 base score of 7.8 (NVD).
How do I remediate CVE-2024-26852?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2024-26852, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

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