CVE-2022-2521: debian debian_linux Release of Invalid Pointer or Reference
Vulnerability summary
CVE-2022-2521 is a medium (CVSS 6.5) Release of Invalid Pointer or Reference vulnerability in debian debian_linux. EPSS estimates a 1.26% chance of exploitation in the next 30 days, higher than 69% of scored vulnerabilities. 2 public exploits are recorded.
Advisory lineage
Upstream 0 · Downstream 7 · Related 3Timeline
- 31-08-2022PublishedVulnerability first disclosed.
- 03-08-2024Last modifiedVulnerability information updated.
Description
It was found in libtiff 4.4.0rc1 that there is an invalid pointer free operation in TIFFClose() at tif_close.c:131 called by tiffcrop.c:2522 that can cause a program crash and denial of service while processing crafted input.
CVSS metrics
3 scores · 3 sources · 1 version- OSV · AlpineEcosystem advisory · calculated6.5MediumCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
- OSV · DebianEcosystem advisory · calculated6.5MediumCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
EPSS trend
Probability
1.26%
Chance of exploitation in the next 30 days
Percentile
69%
Versus all other CVEs
30-day change
0.00 pp
From 1.26% on 18-09-2026
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
2 foundExploit Reference (gitlab.com)
Maturity: unknown
Exploit Reference (gitlab.com)
Maturity: unknown
Weaknesses
CWE · root causeAffected systems
Debian2 products
- tiff< 4.4.0-6
- debian_linuxEOL11.0
Alpine1 product
- tiff< 4.4.0-r3 | < 4.4.0-r1
Libtiff1 product
- libtiff4.4.0:rc1
3 vendors · 4 products
