CVE-2024-26773: ext4: avoid allocating blocks from corrupted group in ext4_mb_try_best_found()
First published: Wed Apr 03 2024(Updated: )
In the Linux kernel, the following vulnerability has been resolved: ext4: avoid allocating blocks from corrupted group in ext4_mb_try_best_found() Determine if the group block bitmap is corrupted before using ac_b_ex in ext4_mb_try_best_found() to avoid allocating blocks from a group with a corrupted block bitmap in the following concurrency and making the situation worse. ext4_mb_regular_allocator ext4_lock_group(sb, group) ext4_mb_good_group // check if the group bbitmap is corrupted ext4_mb_complex_scan_group // Scan group gets ac_b_ex but doesn't use it ext4_unlock_group(sb, group) ext4_mark_group_bitmap_corrupted(group) // The block bitmap was corrupted during // the group unlock gap. ext4_mb_try_best_found ext4_lock_group(ac->ac_sb, group) ext4_mb_use_best_found mb_mark_used // Allocating blocks in block bitmap corrupted group
Credit: 416baaa9-dc9f-4396-8d5f-8c081fb06d67 416baaa9-dc9f-4396-8d5f-8c081fb06d67
| Affected Software | Affected Version | How to fix |
|---|---|---|
| ubuntu/linux | <5.4.0-186.206 | 5.4.0-186.206 |
| ubuntu/linux | <5.15.0-112.122 | 5.15.0-112.122 |
| ubuntu/linux | <6.8~ | 6.8~ |
| ubuntu/linux-aws | <5.4.0-1126.136 | 5.4.0-1126.136 |
| ubuntu/linux-aws | <5.15.0-1063.69 | 5.15.0-1063.69 |
| ubuntu/linux-aws | <6.8~ | 6.8~ |
| ubuntu/linux-aws-5.15 | <5.15.0-1063.69~20.04.1 | 5.15.0-1063.69~20.04.1 |
| ubuntu/linux-aws-5.15 | <6.8~ | 6.8~ |
| ubuntu/linux-aws-5.4 | <5.4.0-1126.136~18.04.1 | 5.4.0-1126.136~18.04.1 |
| ubuntu/linux-aws-5.4 | <6.8~ | 6.8~ |
| ubuntu/linux-aws-6.5 | <6.8~ | 6.8~ |
| ubuntu/linux-aws-fips | <6.8~ | 6.8~ |
| ubuntu/linux-aws-hwe | <6.8~ | 6.8~ |
| ubuntu/linux-azure | <5.4.0-1131.138 | 5.4.0-1131.138 |
| ubuntu/linux-azure | <5.15.0-1066.75 | 5.15.0-1066.75 |
| ubuntu/linux-azure | <6.8~ | 6.8~ |
| ubuntu/linux-azure-4.15 | <6.8~ | 6.8~ |
| ubuntu/linux-azure-5.15 | <6.8~ | 6.8~ |
| ubuntu/linux-azure-5.4 | <5.4.0-1131.138~18.04.1 | 5.4.0-1131.138~18.04.1 |
| ubuntu/linux-azure-5.4 | <6.8~ | 6.8~ |
| ubuntu/linux-azure-6.5 | <6.8~ | 6.8~ |
| ubuntu/linux-azure-fde | <5.15.0-1067.76.1 | 5.15.0-1067.76.1 |
| ubuntu/linux-azure-fde | <6.8~ | 6.8~ |
| ubuntu/linux-azure-fde-5.15 | <5.15.0-1065.74~20.04.1.1 | 5.15.0-1065.74~20.04.1.1 |
| ubuntu/linux-azure-fde-5.15 | <6.8~ | 6.8~ |
| ubuntu/linux-azure-fips | <6.8~ | 6.8~ |
| ubuntu/linux-bluefield | <5.4.0-1086.93 | 5.4.0-1086.93 |
| ubuntu/linux-bluefield | <6.8~ | 6.8~ |
| ubuntu/linux-fips | <6.8~ | 6.8~ |
| ubuntu/linux-gcp | <5.4.0-1130.139 | 5.4.0-1130.139 |
| ubuntu/linux-gcp | <5.15.0-1062.70 | 5.15.0-1062.70 |
| ubuntu/linux-gcp | <6.8~ | 6.8~ |
| ubuntu/linux-gcp-4.15 | <6.8~ | 6.8~ |
| ubuntu/linux-gcp-5.15 | <5.15.0-1062.70~20.04.1 | 5.15.0-1062.70~20.04.1 |
| ubuntu/linux-gcp-5.15 | <6.8~ | 6.8~ |
| ubuntu/linux-gcp-5.4 | <5.4.0-1130.139~18.04.1 | 5.4.0-1130.139~18.04.1 |
| ubuntu/linux-gcp-5.4 | <6.8~ | 6.8~ |
| ubuntu/linux-gcp-6.5 | <6.8~ | 6.8~ |
| ubuntu/linux-gcp-fips | <6.8~ | 6.8~ |
| ubuntu/linux-gke | <5.15.0-1060.66 | 5.15.0-1060.66 |
| ubuntu/linux-gke | <6.8~ | 6.8~ |
| ubuntu/linux-gkeop | <5.4.0-1093.97 | 5.4.0-1093.97 |
| ubuntu/linux-gkeop | <5.15.0-1046.53 | 5.15.0-1046.53 |
| ubuntu/linux-gkeop | <6.8~ | 6.8~ |
| ubuntu/linux-gkeop-5.15 | <5.15.0-1046.53~20.04.1 | 5.15.0-1046.53~20.04.1 |
| ubuntu/linux-gkeop-5.15 | <6.8~ | 6.8~ |
| ubuntu/linux-hwe | <6.8~ | 6.8~ |
| ubuntu/linux-hwe-5.15 | <5.15.0-113.123~20.04.1 | 5.15.0-113.123~20.04.1 |
| ubuntu/linux-hwe-5.15 | <6.8~ | 6.8~ |
| ubuntu/linux-hwe-5.4 | <5.4.0-186.206~18.04.1 | 5.4.0-186.206~18.04.1 |
| ubuntu/linux-hwe-5.4 | <6.8~ | 6.8~ |
| ubuntu/linux-hwe-6.5 | <6.8~ | 6.8~ |
| ubuntu/linux-ibm | <5.4.0-1073.78 | 5.4.0-1073.78 |
| ubuntu/linux-ibm | <5.15.0-1056.59 | 5.15.0-1056.59 |
| ubuntu/linux-ibm | <6.8~ | 6.8~ |
| ubuntu/linux-ibm-5.15 | <5.15.0-1057.60~20.04.1 | 5.15.0-1057.60~20.04.1 |
| ubuntu/linux-ibm-5.15 | <6.8~ | 6.8~ |
| ubuntu/linux-ibm-5.4 | <5.4.0-1073.78~18.04.1 | 5.4.0-1073.78~18.04.1 |
| ubuntu/linux-ibm-5.4 | <6.8~ | 6.8~ |
| ubuntu/linux-intel | <6.8~ | 6.8~ |
| ubuntu/linux-intel-iotg | <5.15.0-1058.64 | 5.15.0-1058.64 |
| ubuntu/linux-intel-iotg | <6.8~ | 6.8~ |
| ubuntu/linux-intel-iotg-5.15 | <5.15.0-1058.64~20.04.1 | 5.15.0-1058.64~20.04.1 |
| ubuntu/linux-intel-iotg-5.15 | <6.8~ | 6.8~ |
| ubuntu/linux-iot | <5.4.0-1038.39 | 5.4.0-1038.39 |
| ubuntu/linux-iot | <6.8~ | 6.8~ |
| ubuntu/linux-kvm | <5.4.0-1114.121 | 5.4.0-1114.121 |
| ubuntu/linux-kvm | <5.15.0-1060.65 | 5.15.0-1060.65 |
| ubuntu/linux-kvm | <6.8~ | 6.8~ |
| ubuntu/linux-laptop | <6.8~ | 6.8~ |
| ubuntu/linux-lowlatency | <5.15.0-110.120 | 5.15.0-110.120 |
| ubuntu/linux-lowlatency | <6.8~ | 6.8~ |
| ubuntu/linux-lowlatency-hwe-5.15 | <5.15.0-110.120~20.04.1 | 5.15.0-110.120~20.04.1 |
| ubuntu/linux-lowlatency-hwe-5.15 | <6.8~ | 6.8~ |
| ubuntu/linux-lowlatency-hwe-6.5 | <6.8~ | 6.8~ |
| ubuntu/linux-lts-xenial | <6.8~ | 6.8~ |
| ubuntu/linux-nvidia | <5.15.0-1058.59 | 5.15.0-1058.59 |
| ubuntu/linux-nvidia | <6.8~ | 6.8~ |
| ubuntu/linux-nvidia-6.5 | <6.8~ | 6.8~ |
| ubuntu/linux-oem-6.5 | <6.8~ | 6.8~ |
| ubuntu/linux-oem-6.8 | <6.8~ | 6.8~ |
| ubuntu/linux-oracle | <5.4.0-1125.134 | 5.4.0-1125.134 |
| ubuntu/linux-oracle | <5.15.0-1061.67 | 5.15.0-1061.67 |
| ubuntu/linux-oracle | <6.8~ | 6.8~ |
| ubuntu/linux-oracle-5.15 | <6.8~ | 6.8~ |
| ubuntu/linux-oracle-5.4 | <5.4.0-1125.134~18.04.1 | 5.4.0-1125.134~18.04.1 |
| ubuntu/linux-oracle-5.4 | <6.8~ | 6.8~ |
| ubuntu/linux-oracle-6.5 | <6.8~ | 6.8~ |
| ubuntu/linux-raspi | <5.4.0-1110.122 | 5.4.0-1110.122 |
| ubuntu/linux-raspi | <6.8~ | 6.8~ |
| ubuntu/linux-raspi-5.4 | <5.4.0-1110.122~18.04.1 | 5.4.0-1110.122~18.04.1 |
| ubuntu/linux-raspi-5.4 | <6.8~ | 6.8~ |
| ubuntu/linux-riscv | <6.8~ | 6.8~ |
| ubuntu/linux-riscv-5.15 | <5.15.0-1059.63~20.04.1 | 5.15.0-1059.63~20.04.1 |
| ubuntu/linux-riscv-5.15 | <6.8~ | 6.8~ |
| ubuntu/linux-riscv-6.5 | <6.8~ | 6.8~ |
| ubuntu/linux-starfive | <6.8~ | 6.8~ |
| ubuntu/linux-starfive-6.5 | <6.8~ | 6.8~ |
| ubuntu/linux-xilinx-zynqmp | <5.4.0-1045.49 | 5.4.0-1045.49 |
| ubuntu/linux-xilinx-zynqmp | <5.15.0-1030.34 | 5.15.0-1030.34 |
| ubuntu/linux-xilinx-zynqmp | <6.8~ | 6.8~ |
| redhat/kernel | <4.19.308 | 4.19.308 |
| redhat/kernel | <5.4.270 | 5.4.270 |
| redhat/kernel | <5.10.211 | 5.10.211 |
| redhat/kernel | <5.15.150 | 5.15.150 |
| redhat/kernel | <6.1.80 | 6.1.80 |
| redhat/kernel | <6.6.19 | 6.6.19 |
| redhat/kernel | <6.7.7 | 6.7.7 |
| redhat/kernel | <6.8 | 6.8 |
| debian/linux | 5.10.218-1 5.10.221-1 6.1.94-1 6.1.99-1 6.9.10-1 |
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Reference Links
- https://git.kernel.org/stable/c/0184747b552d6b5a14db3b7fcc3b792ce64dedd1
- https://git.kernel.org/stable/c/21f8cfe79f776287459343e9cfa6055af61328ea
- https://git.kernel.org/stable/c/260fc96283c0f594de18a1b045faf6d8fb42874d
- https://git.kernel.org/stable/c/4530b3660d396a646aad91a787b6ab37cf604b53
- https://git.kernel.org/stable/c/4c21fa60a6f4606f6214a38f50612b17b2f738f5
- https://git.kernel.org/stable/c/927794a02169778c9c2e7b25c768ab3ea8c1dc03
- https://git.kernel.org/stable/c/a2576ae9a35c078e488f2c573e9e6821d651fbbe
- https://git.kernel.org/stable/c/f97e75fa4e12b0aa0224e83fcbda8853ac2adf36
- https://launchpad.net/bugs/cve/CVE-2024-26773
- https://lists.debian.org/debian-lts-announce/2024/06/msg00017.html
- https://lists.debian.org/debian-lts-announce/2024/06/msg00020.html
- https://git.kernel.org/linus/4530b3660d396a646aad91a787b6ab37cf604b53 (6.8-rc3)
- https://www.cve.org/CVERecord?id=CVE-2024-26773
- https://ubuntu.com/security/notices/USN-6820-1
- https://ubuntu.com/security/notices/USN-6821-1
- https://ubuntu.com/security/notices/USN-6821-2
- https://ubuntu.com/security/notices/USN-6828-1
- https://ubuntu.com/security/notices/USN-6820-2
- https://ubuntu.com/security/notices/USN-6821-3
- https://ubuntu.com/security/notices/USN-6831-1
- https://ubuntu.com/security/notices/USN-6821-4
- https://ubuntu.com/security/notices/USN-6867-1
- https://ubuntu.com/security/notices/USN-6871-1
- https://ubuntu.com/security/notices/USN-6892-1
- https://nvd.nist.gov/vuln/detail/CVE-2024-26773
- https://security-tracker.debian.org/tracker/CVE-2024-26773
- https://git.kernel.org/linus/1da177e4c3f41524e886b7f1b8a0c1fc7321cac2
- https://git.kernel.org/linus/4530b3660d396a646aad91a787b6ab37cf604b53
- https://ubuntu.com/security/CVE-2024-26773
- https://access.redhat.com/security/cve/CVE-2024-26773
- https://lore.kernel.org/linux-cve-announce/2024040308-CVE-2024-26773-a314@gregkh/T
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=2273237
- https://access.redhat.com/errata/RHSA-2024:4823
- https://access.redhat.com/errata/RHSA-2024:4831
- https://bugzilla.redhat.com/show_bug.cgi?id=2273236
Parent vulnerabilities
(Appears in the following advisories)
- agent/severity
- agent/type
- agent/title
- agent/remedy
- agent/first-publish-date
- collector/launchpad-cve
- source/Launchpad
- agent/author
- agent/description
- agent/event
- collector/nvd-api
- source/NVD
- agent/last-modified-date
- collector/nvd-cve
- collector/mitre-cve
- source/MITRE
- collector/usn-cve
- source/Ubuntu
- agent/software-canonical-lookup
- agent/references
- agent/tags
- collector/security-tracker-debian
- source/Debian
- agent/softwarecombine
- collector/redhat-bugzilla
- source/Red Hat
- alias/CVE-2024-26773
- package-manager/ubuntu
- package-manager/debian
- package-manager/redhat