CVE-2021-45469: debian debian_linux Out-of-bounds Read
CVSS: 7.8v3.1HighModified
AliasesUBUNTU-CVE-2021-45469DEBIAN-CVE-2021-45469
Published 23-12-2021Last modified 04-08-2024
Vulnerability summary
CVE-2021-45469 is a high (CVSS 7.8) Out-of-bounds Read vulnerability in debian debian_linux. EPSS estimates a 0.57% chance of exploitation in the next 30 days, higher than 45.8% of scored vulnerabilities. 2 public exploits are recorded.
CVSS score
7.8/10
010
High · v3.1 (NVD)EPSS score
0.57%
0%100%
Low · +0.02 pp in 30 daysKEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits2reference
Advisory lineage
Upstream 0 · Downstream 6 · Related 2Timeline
- 23-12-2021PublishedVulnerability first disclosed.
- 04-08-2024Last modifiedVulnerability information updated.
Description
In __f2fs_setxattr in fs/f2fs/xattr.c in the Linux kernel through 5.15.11, there is an out-of-bounds memory access when an inode has an invalid last xattr entry.
CVSS metrics
4 scores · 3 sources · 2 versionsHigh 7.8Preferred score · NVD (NIST)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:HSourcesAll 3 agree
- OSV · UbuntuEcosystem advisory · calculated7.8HighCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- OSV · DebianEcosystem advisory · calculated7.8HighCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Medium 4.6Preferred score · NVD (NIST)
AV:L/AC:L/Au:N/C:P/I:P/A:PSourcesSingle source
EPSS trend
Probability
0.57%
Chance of exploitation in the next 30 days
Percentile
46%
Versus all other CVEs
30-day change
+0.02 pp
From 0.55% on 18-09-2026
18-09-202618-10-2026
EPSS score0.57%
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
2 foundExploit Reference (bugzilla.kernel.org)
Maturity: unknown
Exploit Reference (git.kernel.org)
Maturity: unknown
Weaknesses
CWE · root causeAffected systems
Ubuntu68 products
- linuxAll versions (No fix recorded) | < 4.4.0-222.255 | < 4.15.0-169.177 | < 5.4.0-105.119
- linux-aws< 4.4.0-1102.107 | < 4.4.0-1138.152 | < 4.15.0-1121.129 | < 5.4.0-1069.73
- linux-aws-5.0All versions (No fix recorded)
- linux-aws-5.11All versions (No fix recorded)
- linux-aws-5.13< 5.13.0-1019.21~20.04.1
Debian2 products
- linux< 5.15.15-1
- debian_linuxEOL9.0 | 10.0 | 11.0
Fedoraproject1 product
- fedoraEOL34 | 35
Linux1 product
- linux_kernel≤ 5.15.11
5 vendors · 80 products
References
15 links- bugzilla.kernel.org/show_bug.cgi?id=215235X Refsource MISCREPORTExploitIssue TrackingPatchVendor Advisory
- lists.debian.org/debian-lts-announce/2022/03/msg00012.htmlMailing ListX Refsource MLISTThird Party Advisory
