CVE-2025-21671 (GCVE-0-2025-21671)

Vulnerability from cvelistv5 – Published: 2025-01-31 11:25 – Updated: 2025-11-03 20:58
VLAI?
Title
zram: fix potential UAF of zram table
Summary
In the Linux kernel, the following vulnerability has been resolved: zram: fix potential UAF of zram table If zram_meta_alloc failed early, it frees allocated zram->table without setting it NULL. Which will potentially cause zram_meta_free to access the table if user reset an failed and uninitialized device.
Severity ?
7.8 (High)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CWE
Assigner
References
Impacted products
Vendor Product Version
Linux Linux Affected: ac3b5366b9b7c9d97b606532ceab43d2329a22f3 , < fe3de867f94819ba0f28e035c0b0182150147d95 (git)
Affected: 0b5b0b65561b34e6e360de317e4bcd031bfabf42 , < 571d3f6045cd3a6d9f6aec33b678f3ffe97582ef (git)
Affected: 6fb92e9a52e3feae309a213950f21dfcd1eb0b40 , < 902ef8f16d5ca77edc77c30656be54186c1e99b7 (git)
Affected: 74363ec674cb172d8856de25776c8f3103f05e2f , < 212fe1c0df4a150fb6298db2cfff267ceaba5402 (git)
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    Linux Linux Affected: 6.1.122 , < 6.1.127 (semver)
Affected: 6.6.68 , < 6.6.74 (semver)
Affected: 6.12.7 , < 6.12.11 (semver)
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  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
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  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



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