CVE-2025-38608
In the Linux kernel, the following vulnerability has been resolved: bpf, ktls: Fix data corruption when using bpf_msg_pop_data() in ktls When sending plaintext data, we initially calculated the corresponding ciphertext length.
Does this matter?
Lower severity and a low EPSS score (0.40%). Track it; it rarely justifies an emergency change on its own.
Description
In the Linux kernel, the following vulnerability has been resolved: bpf, ktls: Fix data corruption when using bpf_msg_pop_data() in ktls When sending plaintext data, we initially calculated the corresponding ciphertext length. However, if we later reduced the plaintext data length via socket policy, we failed to recalculate the ciphertext length. This results in transmitting buffers containing uninitialized data during ciphertext transmission. This causes uninitialized bytes to be appended after a complete "Application Data" packet, leading to errors on the receiving end when parsing TLS record.
- CVSS 3.1
- 5.5 MEDIUMCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
- EPSS
- 0.40% probability · 33th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-908
- Affected
- linux/linux kernel · debian/debian linux
- Source
- 416baaa9-dc9f-4396-8d5f-8c081fb06d67
References
- https://git.kernel.org/stable/c/0e853c1464bcf61207f8b5c32d2ac5ee495e859dPatch
- https://git.kernel.org/stable/c/16aca8bb4ad0d8a13c8b6da4007f4e52d53035bbPatch
- https://git.kernel.org/stable/c/178f6a5c8cb3b6be1602de0964cd440243f493c9Patch
- https://git.kernel.org/stable/c/1e480387d4b42776f8957fb148af9d75ce93b96dPatch
- https://git.kernel.org/stable/c/6ba20ff3cdb96a908b9dc93cf247d0b087672e7cPatch
- https://git.kernel.org/stable/c/73fc5d04009d3969ff8e8574f0fd769f04124e59Patch
- https://git.kernel.org/stable/c/849d24dc5aed45ebeb3490df429356739256ac40Patch
- https://git.kernel.org/stable/c/90d6ef67440cec2a0aad71a0108c8f216437345cPatch
- https://git.kernel.org/stable/c/ee03766d79de0f61ea29ffb6ab1c7b196ea1b02ePatch
- https://lists.debian.org/debian-lts-announce/2025/10/msg00007.htmlThird Party Advisory
- https://lists.debian.org/debian-lts-announce/2025/10/msg00008.htmlThird Party Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.