# CVE-2022-49807: nvmet: fix a memory leak in nvmet_auth_set_key

Status: published. Published: 2025-05-01. Updated: 2026-11-05.

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

nvmet: fix a memory leak in nvmet_auth_set_key

When changing dhchap secrets we need to release the old
secrets as well.

kmemleak complaint:
--
unreferenced object 0xffff8c7f44ed8180 (size 64):
  comm "check", pid 7304, jiffies 4295686133 (age 72034.246s)
  hex dump (first 32 bytes):
    44 48 48 43 2d 31 3a 30 30 3a 4c 64 4c 4f 64 71  DHHC-1:00:LdLOdq
    79 56 69 67 77 48 55 32 6d 5a 59 4c 7a 35 59 38  yVigwHU2mZYLz5Y8
  backtrace:
    [<00000000b6fc5071>] kstrdup+0x2e/0x60
    [<00000000f0f4633f>] 0xffffffffc0e07ee6
    [<0000000053006c05>] 0xffffffffc0dff783
    [<00000000419ae922>] configfs_write_iter+0xb1/0x120
    [<000000008183c424>] vfs_write+0x2be/0x3c0
    [<000000009005a2a5>] ksys_write+0x5f/0xe0
    [<00000000cd495c89>] do_syscall_64+0x38/0x90
    [<00000000f2a84ac5>] entry_SYSCALL_64_after_hwframe+0x63/0xcd

## Remediation

No remediation reported in collected sources

## Affected products and versions

- Linux / Linux: ≥ db1312dd95488b5e6ff362ff66fcf953a46b1821; < 65710ea51d4a185592c7b14c9e33d0c4a364f074 (affected, git); ≥ db1312dd95488b5e6ff362ff66fcf953a46b1821; < 0a52566279b4ee65ecd2503d7b7342851f84755c (affected, git). Source: CNA: Linux
- Linux / Linux: 6.0 (affected); ≥ 0; < 6.0 (unaffected, semver); ≥ 6.0.10; ≤ 6.0.* (unaffected, semver); ≥ 6.1; ≤ * (unaffected, original_commit_for_fix). Source: CNA: Linux

## Severity and prioritization

- CISA KEV: No listing in collected sources

- EPSS: 0.17% as of 2026-11-05; percentile 6.44%

- SSVC: exploitation none; automatable no; technical impact partial; source ADP: CISA-ADP

- Weaknesses: Not reported

## Exploit evidence

No exploit evidence in collected sources. This is not proof of no exploitation.

## References

- https://git.kernel.org/stable/c/65710ea51d4a185592c7b14c9e33d0c4a364f074 (CNA: Linux)

- https://git.kernel.org/stable/c/0a52566279b4ee65ecd2503d7b7342851f84755c (CNA: Linux)

## Provenance

- CNA: Linux: https://www.cve.org/CVERecord?id=CVE-2022-49807; retrieved 2026-11-05; source updated 2026-11-05

- FIRST EPSS: https://api.first.org/data/v1/epss?cve=CVE-2022-49807; retrieved 2026-11-05; source updated Not reported

Revision: 97f7c41f63be85f26534eac387826f9ad2e5956c38b5a9d5055d760f40ecc462

Canonical: https://y2.dev/cve/CVE-2022-49807

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