CVE-2026-43107
mediumIn the Linux kernel, the following vulnerability has been resolved: xfrm: account XFRMA_IF_ID in aevent size calculation xfrm_get_ae() allocates the reply sk…
Vendor / product: Linux — linux kernel
In the Linux kernel, the following vulnerability has been resolved: xfrm: account XFRMA_IF_ID in aevent size calculation xfrm_get_ae() allocates the reply skb with xfrm_aevent_msgsize(), then build_aevent() appends attributes including XFRMA_IF_ID when x->if_id is set. xfrm_aevent_msgsize() does not include space for XFRMA_IF_ID. For states with if_id, build_aevent() can fail with -EMSGSIZE and hit BUG_ON(err
CVSS
5.5
5.5 (CVSS v3.1)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H Severity source: NVD CVSS v3.1 (nvd@nist.gov)
Timeline (UTC)
Published: 2026-05-06 10:16
Modified: 2026-10-30 13:18
NVD status: Modified
Last synced 3 days ago
Verified against the source API 2026-10-30 13:38 UTC
Exploitation
Not listed in CISA KEV (as of last catalog sync)
Absence from KEV does not mean a CVE is not exploited. Exploitation status: unknown (no authoritative evidence in our sources).
Affected products
linux / linux_kernel ≥4.19 <6.12.83, ≥6.13 <6.18.24, ≥6.19 <6.19.14, 7.0
Weakness classification (CWE)
Source: NVD / CISA. “NVD-CWE-Other” and “NVD-CWE-noinfo” mean NVD could not assign a specific weakness.
Mitigation & advisories
Patch / mitigation: https://git.kernel.org/stable/c/2c41283d94af943a05f7f2cc1a01f0c872f3cf43
Patch / mitigation: https://git.kernel.org/stable/c/58e5735d1a5373652f405a0c16e54ac04aaab0ad
Patch / mitigation: https://git.kernel.org/stable/c/7081d46d32312f1a31f0e0e99c6835a394037599
Patch / mitigation: https://git.kernel.org/stable/c/e62e322ea20be78e346e4b49f9a6b9f03313af4c
References
- https://git.kernel.org/stable/c/2c41283d94af943a05f7f2cc1a01f0c872f3cf43 416baaa9-dc9f-4396-8d5f-8c081fb06d67
- https://git.kernel.org/stable/c/58e5735d1a5373652f405a0c16e54ac04aaab0ad 416baaa9-dc9f-4396-8d5f-8c081fb06d67
- https://git.kernel.org/stable/c/7081d46d32312f1a31f0e0e99c6835a394037599 416baaa9-dc9f-4396-8d5f-8c081fb06d67
- https://git.kernel.org/stable/c/b7dbdc34d22f743abb2c460dfae0d69cd8a45e69 416baaa9-dc9f-4396-8d5f-8c081fb06d67
- https://git.kernel.org/stable/c/e62e322ea20be78e346e4b49f9a6b9f03313af4c 416baaa9-dc9f-4396-8d5f-8c081fb06d67
- https://git.kernel.org/stable/c/f8f3bb89ab677db15f9f5250c77af728f9afe995 416baaa9-dc9f-4396-8d5f-8c081fb06d67
Data sources
NVD CVE API 2.0 — fetched 2026-10-30 13:38 UTC · record ↗