CVE-2024-58237: Linux kernel · bpf: consider that tail calls invalidate packet pointers
Affects Linux kernelSource GCVE Database
Not known to be exploited · CVSS 7.8 High · fixed in 6.8.0-1029.31~22.04.1 : patch Linux kernel soon.
Data as of 26 Oct 2026, 12:54 UTC
- EPSS
- 0.1% chance of exploitation in 30 days – higher than 9% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
- Patch
- Available – fixed in 6.8.0-1029.31~22.04.1, 6.8.0-1029.34~22.04.1, 6.8.0-1030.32~22.04.1 +31
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:HExploitation evidence
Disclosed: evidence found.
CVE published 5 May 2025
Detectable: no evidence on record.
No public nuclei template indexed
Weaponised: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors
A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 26 Oct 2026.
What to do
Upgrade to a fixed release listed under Affected software.
Patches and advisories
- ubuntu.com/security/notices/USN-7513-1 (opens in a new tab)
- ubuntu.com/security/notices/USN-7513-2 (opens in a new tab)
- ubuntu.com/security/notices/USN-7514-1 (opens in a new tab)
- ubuntu.com/security/notices/USN-7515-1 (opens in a new tab)
- ubuntu.com/security/notices/USN-7513-3 (opens in a new tab)
- ubuntu.com/security/notices/USN-7522-1 (opens in a new tab)
- ubuntu.com/security/notices/USN-7515-2 (opens in a new tab)
- ubuntu.com/security/notices/USN-7523-1 (opens in a new tab)
- ubuntu.com/security/notices/USN-7524-1 (opens in a new tab)
- ubuntu.com/security/notices/USN-7513-4 (opens in a new tab)
- ubuntu.com/security/notices/USN-7513-5 (opens in a new tab)
Affected software
| Product | Affected | Fixed in |
|---|---|---|
Ubuntu 24.04 LTSlinuxpkg:deb/ubuntu/linux?arch=source&distro=nobleOther threats | Affected
| Fixed in
|
Ubuntu 24.04 LTSlinux-awspkg:deb/ubuntu/linux-aws?arch=source&distro=nobleOther threats | Affected
| Fixed in
|
Ubuntu 24.04 LTSlinux-azurepkg:deb/ubuntu/linux-azure?arch=source&distro=nobleOther threats | Affected
| Fixed in
|
Ubuntu 24.04 LTSlinux-azure-6.11pkg:deb/ubuntu/linux-azure-6.11?arch=source&distro=nobleOther threats | Affected
| Fixed in
|
Ubuntu 24.04 LTSlinux-azure-nvidiapkg:deb/ubuntu/linux-azure-nvidia?arch=source&distro=nobleOther threats | Affected
| Fixed in
|
Ubuntu 24.04 LTSlinux-gcppkg:deb/ubuntu/linux-gcp?arch=source&distro=nobleOther threats | Affected
| Fixed in
|
Check your own hosts for these packages with threat-finder (opens in a new tab), our free open-source scanner.
Description
In the Linux kernel, the following vulnerability has been resolved: bpf: consider that tail calls invalidate packet pointers Tail-called programs could execute any of the helpers that invalidate packet pointers. Hence, conservatively assume that each tail call invalidates packet pointers. Making the change in bpf_helper_changes_pkt_data() automatically makes use of check_cfg() logic that computes 'changes_pkt_data' effect for global sub-programs, such that the following program could be rejected: int tail_call(struct __sk_buff *sk) { bpf_tail_call_static(sk, &jmp_table, 0); return 0; } SEC("tc") int not_safe(struct __sk_buff *sk) { int *p = (void *)(long)sk->data; ... make p valid ... tail_call(sk); *p = 42; /* this is unsafe */ ... } The tc_bpf2bpf.c:subprog_tc() needs change: mark it as a function that can invalidate packet pointers. Otherwise, it can't be freplaced with tailcall_freplace.c:entry_freplace() that does a tail call.
References
- ubuntu.com/security/CVE-2024-58237 (opens in a new tab)
- cve.org/CVERecord?id=CVE-2024-58237 (opens in a new tab)
- git.kernel.org/linus/1a4607ffba35bf2a630aab299e34dd3f6e658d70 (opens in a new tab)
- git.kernel.org/stable/c/1a4607ffba35bf2a630aab299e34dd3f6e658d70 (opens in a new tab)
- git.kernel.org/stable/c/1c2244437f9ad3dd91215f920401a14f2542dbfc (opens in a new tab)
- ubuntu.com/security/notices/USN-7513-1 (opens in a new tab)
- ubuntu.com/security/notices/USN-7513-2 (opens in a new tab)
- ubuntu.com/security/notices/USN-7514-1 (opens in a new tab)
- ubuntu.com/security/notices/USN-7515-1 (opens in a new tab)
- ubuntu.com/security/notices/USN-7513-3 (opens in a new tab)
- ubuntu.com/security/notices/USN-7522-1 (opens in a new tab)
- ubuntu.com/security/notices/USN-7515-2 (opens in a new tab)
- ubuntu.com/security/notices/USN-7523-1 (opens in a new tab)
- ubuntu.com/security/notices/USN-7524-1 (opens in a new tab)
- ubuntu.com/security/notices/USN-7513-4 (opens in a new tab)
- ubuntu.com/security/notices/USN-7513-5 (opens in a new tab)