Description
An issue was discovered in fs/f2fs/inline.c in the Linux kernel through 4.4. A denial of service (out-of-bounds memory access and BUG) can occur for a modified f2fs filesystem image in which an inline inode contains an invalid reserved blkaddr.
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
Debian
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian 14 | linux | 4.18.10-1 | — |
| Debian 13 | linux | 4.18.10-1 | — |
| Debian 12 | linux | 4.18.10-1 | — |
| Debian 9 | linux | 4.9.110-3+deb9u5 | DSA-4308-1 |
| Debian 8 | linux-4.9 | 4.9.110-3+deb9u5~deb8u1 | DLA-1531-1 |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 26.04 LTS | linux-vmware | No fix yet | — |
| Ubuntu 24.04 LTS | linux-raspi-realtime | No fix yet | — |
| Ubuntu 22.04 LTS | linux-riscv +2 | No fix yet | — |
| Ubuntu 20.04 LTS | linux-gke +3 | No fix yet | — |
| Ubuntu 18.04 LTS | linux | 4.15.0-58.64 | USN-4094-1 |
| Ubuntu 18.04 LTS | linux-aws | 4.15.0-1047.49 | USN-4118-1 |
| Ubuntu 18.04 LTS | linux-azure | 4.18.0-1011.11~18.04.1 | — |
| Ubuntu 18.04 LTS | linux-gcp +1 | 4.15.0-1040.42 | USN-4094-1 |
| Ubuntu 18.04 LTS | linux-kvm | 4.15.0-1042.42 | USN-4094-1 |
| Ubuntu 18.04 LTS | linux-oem | 4.15.0-1050.57 | USN-4094-1 |
| Ubuntu 18.04 LTS | linux-oracle | 4.15.0-1021.23 | USN-4094-1 |
| Ubuntu 18.04 LTS | linux-raspi2 | 4.15.0-1043.46 | USN-4094-1 |
| Ubuntu 18.04 LTS | linux-snapdragon | 4.15.0-1060.66 | USN-4094-1 |
Show 6 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 16.04 LTS | linux | 4.4.0-145.171 | USN-3932-1 |
| Ubuntu 16.04 LTS | linux-aws | 4.4.0-1079.89 | USN-3932-1 |
| Ubuntu 16.04 LTS | linux-aws-hwe | 4.15.0-1047.49~16.04.1 | USN-4118-1 |
| Ubuntu 16.04 LTS | linux-azure | 4.15.0-1055.60 | USN-4094-1 |
| Ubuntu 16.04 LTS | linux-gcp | 4.15.0-1040.42~16.04.1 | USN-4094-1 |
| Ubuntu 16.04 LTS | linux-hwe | 4.15.0-58.64~16.04.1 | USN-4094-1 |
| Ubuntu 16.04 LTS | linux-kvm | 4.4.0-1043.49 | USN-3932-1 |
| Ubuntu 16.04 LTS | linux-oracle | 4.15.0-1021.23~16.04.1 | USN-4094-1 |
| Ubuntu 16.04 LTS | linux-raspi2 | 4.4.0-1106.114 | USN-3932-1 |
| Ubuntu 16.04 LTS | linux-snapdragon | 4.4.0-1110.115 | USN-3932-1 |
| Ubuntu 14.04 LTS | linux-aws | 4.4.0-1040.43 | USN-3932-2 |
| Ubuntu 14.04 LTS | linux-lts-xenial | 4.4.0-144.170~14.04.1 | USN-3932-2 |
| Ubuntu Pro FIPS 18.04 LTS | linux-aws-fips +2 | No fix yet | — |
| Ubuntu Pro FIPS-updates 18.04 LTS | linux-aws-fips | 4.15.0-2018.18 | — |
| Ubuntu Pro FIPS-updates 18.04 LTS | linux-azure-fips | 4.15.0-2006.7 | — |
| Ubuntu Pro FIPS-updates 16.04 LTS | linux-fips | 4.4.0-1008.10 | — |
| Ubuntu Pro 14.04 LTS | linux-azure | 4.15.0-1059.64~14.04.1 | — |
Advisories 6
- USN-4094-1 linux, linux-hwe, linux-azure, linux-gcp, linux-gke-4.15, linux-kvm, linux-oem, linux-oracle, linux-raspi2, linux-snapdragon vulnerabilities Ubuntu Security Notices (USN) · Sep 7, 2026
- USN-4118-1 linux-aws vulnerabilities Ubuntu Security Notices (USN) · Sep 7, 2026
- USN-3932-2 linux-lts-xenial, linux-aws vulnerabilities Ubuntu Security Notices (USN) · Sep 7, 2026
- USN-3932-1 linux, linux-aws, linux-kvm, linux-raspi2, linux-snapdragon vulnerabilities Ubuntu Security Notices (USN) · Jun 3, 2026
- DSA-4308-1 linux - security update Debian Security (DSA / DLA) · Mar 9, 2026
- DLA-1531-1 linux-4.9 - security update Debian Security (DSA / DLA) · Mar 9, 2026
References
- [debian-lts-announce] 20181003 [SECURITY] [DLA 1531-1] linux-4.9 security update mailing-list
- https://sourceforge.net/p/linux-f2fs/mailman/message/36356878/
- 104680 vdb-entry
- DSA-4308 vendor-advisory
- https://bugzilla.kernel.org/show_bug.cgi?id=200179
- 20190130 [slackware-security] Slackware 14.2 kernel (SSA:2019-030-01) mailing-list
- openSUSE-SU-2018:3202 vendor-advisory
- http://packetstormsecurity.com/files/151420/Slackware-Security-Advisory-Slackware-14.2-kernel-Updates.html
- 20181001 [SECURITY] [DSA 4308-1] linux security update mailing-list
- USN-3932-1 vendor-advisory
- USN-3932-2 vendor-advisory
- USN-4094-1 vendor-advisory
- USN-4118-1 vendor-advisory
- https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=4dbe38dc386910c668c75ae616b99b823b59f3eb
- https://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git/commit/?id=3bfe2049c222b23342ff2a216cd5a869e8a14897