CVE-2026-89608ecryptfs: pass packet set buffer size to parser
Updated under an hour ago ()
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No exploitation reported and no EPSS estimate yet.
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In the Linux kernel, the following vulnerability has been resolved: ecryptfs: pass packet set buffer size to parser ecryptfs_parse_packet_set() receives a pointer into the file header, but it calculates the remaining packet buffer size from PAGE_SIZE - 8. For version 1 headers the packet set starts later in the header, so this can overstate the available buffer. Pass the actual packet set buffer length from the caller and calculate per-packet limits from the remaining bytes in that buffer. Recompute the remaining length after consuming a tag 3 packet before parsing the following tag 11 packet.
- CVSS
- 7.1 HIGH (v3.1, CNA)CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H
- Weakness (CWE)
- Not given
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- Linux
- NVD analysis
- Received
- Record last updated
- Sep 14, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
Linux Linux linux:linux (from the name) | from 237fead619984cc48818fe12ee0ceada3f55b012 before e7573b0e3058c6bbdfe81673f22c09900fde9e65; 237fead619984cc48818fe12ee0ceada3f55b012 builds before 66a87559ecb26afe80ad512faf728a158e2b81da; 237fead619984cc48818fe12ee0ceada3f55b012 builds before 3bd9bb3e167a7c14a50423f6ff03ee0fb007199d; from 237fead619984cc48818fe12ee0ceada3f55b012 before 749fa08d8f1b318bd8f4669a14a8a4a8c1bbdaac; from 237fead619984cc48818fe12ee0ceada3f55b012 before 329de8b9e988b152b938f09224670d97bada0b96; from 237fead619984cc48818fe12ee0ceada3f55b012 before e5d254e654f2311a3c4b9c791d7f216554bcd17a; from 237fead619984cc48818fe12ee0ceada3f55b012 before 747fd45be396a6aea3420ab657a0ab4e60185b05; from 237fead619984cc48818fe12ee0ceada3f55b012 before 2602b79c5b3e2f6fce12e38a670f8e3fda4e46a2 | CNA record |
References
- https://git.kernel.org/stable/c/e7573b0e3058c6bbdfe81673f22c09900fde9e65
- https://git.kernel.org/stable/c/66a87559ecb26afe80ad512faf728a158e2b81da
- https://git.kernel.org/stable/c/3bd9bb3e167a7c14a50423f6ff03ee0fb007199d
- https://git.kernel.org/stable/c/749fa08d8f1b318bd8f4669a14a8a4a8c1bbdaac
- https://git.kernel.org/stable/c/329de8b9e988b152b938f09224670d97bada0b96
- https://git.kernel.org/stable/c/e5d254e654f2311a3c4b9c791d7f216554bcd17a
- https://git.kernel.org/stable/c/747fd45be396a6aea3420ab657a0ab4e60185b05
- https://git.kernel.org/stable/c/2602b79c5b3e2f6fce12e38a670f8e3fda4e46a2
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.