CVE-2024-56631: scsi: sg: Fix slab-use-after-free read in sg_release()

Published Dec 27, 2024
·
Updated

In the Linux kernel, the following vulnerability has been resolved:

scsi: sg: Fix slab-use-after-free read in sgrelease()

Fix a use-after-free bug in sgrelease(), detected by syzbot with KASAN:

BUG: KASAN: slab-use-after-free in lockrelease+0x151/0xa30 kernel/locking/lockdep.c:5838 mutexunlockslowpath+0xe2/0x750 kernel/locking/mutex.c:912 sgrelease+0x1f4/0x2e0 drivers/scsi/sg.c:407

In sgrelease(), the function krefput(&sfp->fref, sgremovesfp) is called before releasing the openrellock mutex. The krefput() call may decrement the reference count of sfp to zero, triggering its cleanup through sgremovesfp(). This cleanup includes scheduling deferred work via sgremovesfpusercontext(), which ultimately frees sfp.

After krefput(), sgrelease() continues to unlock openrellock and may reference sfp or sdp. If sfp has already been freed, this results in a slab-use-after-free error.

Move the krefput(&sfp->fref, sgremovesfp) call after unlocking the openrellock mutex. This ensures:

- No references to sfp or sdp occur after the reference count is decremented.

- Cleanup functions such as sgremovesfp() and sgremovesfpusercontext() can safely execute without impacting the mutex handling in sgrelease().

The fix has been tested and validated by syzbot. This patch closes the bug reported at the following syzkaller link and ensures proper sequencing of resource cleanup and mutex operations, eliminating the risk of use-after-free errors in sgrelease().

Other sources

This CVE was automatically created from a reference found in an email or other text. If you are reading this, then this CVE entry is probably erroneous, since this text should be replaced by the official CVE description automatically.

— Launchpad

Affected Software

211 affected componentsFixes available
Linux Linux kernel>=3.16.85<6.6.66
Linux Linux kernel>=6.7<6.12.5
Linux Linux kernel=6.13-rc1
ubuntu/linux-aws<4.4.0-1143.149
4.4.0-1143.149
ubuntu/linux-azure<4.15.0-1188.203~14.04.1
4.15.0-1188.203~14.04.1
ubuntu/linux-lts-xenial<4.4.0-268.302~14.04.1
4.4.0-268.302~14.04.1
ubuntu/linux<4.4.0-268.302
4.4.0-268.302
ubuntu/linux-aws<4.4.0-1181.196
4.4.0-1181.196
ubuntu/linux-aws-hwe<4.15.0-1180.193~16.04.1
4.15.0-1180.193~16.04.1
ubuntu/linux-azure<4.15.0-1188.203~16.04.1
4.15.0-1188.203~16.04.1
ubuntu/linux-gcp<4.15.0-1173.190~16.04.1
4.15.0-1173.190~16.04.1
ubuntu/linux-hwe<4.15.0-237.249~16.04.1
4.15.0-237.249~16.04.1
ubuntu/linux-kvm<4.4.0-1144.155
4.4.0-1144.155
ubuntu/linux-oracle<4.15.0-1142.153~16.04.1
4.15.0-1142.153~16.04.1
ubuntu/linux-hwe-edge*
ubuntu/linux-fips<4.4.0-1113.120
4.4.0-1113.120
ubuntu/linux-fips*
ubuntu/linux<4.15.0-237.249
4.15.0-237.249
ubuntu/linux-aws<4.15.0-1180.193
4.15.0-1180.193
ubuntu/linux-aws-5.0*
ubuntu/linux-aws-5.3*
ubuntu/linux-aws-5.4<5.4.0-1142.152~18.04.1
5.4.0-1142.152~18.04.1
ubuntu/linux-azure*
ubuntu/linux-azure-4.15<4.15.0-1188.203
4.15.0-1188.203
ubuntu/linux-azure-5.3*
ubuntu/linux-azure-5.4<5.4.0-1147.154~18.04.1
5.4.0-1147.154~18.04.1
ubuntu/linux-azure-edge*
ubuntu/linux-gcp*
ubuntu/linux-gcp-4.15<4.15.0-1173.190
4.15.0-1173.190
ubuntu/linux-gcp-5.3*
ubuntu/linux-gcp-5.4<5.4.0-1145.154~18.04.1
5.4.0-1145.154~18.04.1
ubuntu/linux-gke-4.15*
ubuntu/linux-gke-5.4*
ubuntu/linux-gkeop-5.4*
ubuntu/linux-hwe*
ubuntu/linux-hwe-5.4<5.4.0-211.231~18.04.1
5.4.0-211.231~18.04.1
ubuntu/linux-hwe-edge*
ubuntu/linux-ibm-5.4<5.4.0-1090.95~18.04.1
5.4.0-1090.95~18.04.1
ubuntu/linux-kvm<4.15.0-1163.168
4.15.0-1163.168
ubuntu/linux-oem*
ubuntu/linux-oracle<4.15.0-1142.153
4.15.0-1142.153
ubuntu/linux-oracle-5.0*
ubuntu/linux-oracle-5.3*
ubuntu/linux-oracle-5.4<5.4.0-1140.149~18.04.1
5.4.0-1140.149~18.04.1
ubuntu/linux-raspi-5.4<5.4.0-1129.142~18.04.1
5.4.0-1129.142~18.04.1
ubuntu/linux-aws-fips<4.15.0-2118.124
4.15.0-2118.124
ubuntu/linux-azure-fips<4.15.0-2097.103
4.15.0-2097.103
ubuntu/linux-fips<4.15.0-1135.146
4.15.0-1135.146
ubuntu/linux-gcp-fips<4.15.0-2081.87
4.15.0-2081.87
ubuntu/linux-aws-fips*
ubuntu/linux-azure-fips*
ubuntu/linux-fips*
ubuntu/linux-gcp-fips*
ubuntu/linux<5.4.0-211.231
5.4.0-211.231
ubuntu/linux-aws<5.4.0-1142.152
5.4.0-1142.152
ubuntu/linux-aws-5.15<5.15.0-1080.87~20.04.1
5.15.0-1080.87~20.04.1
ubuntu/linux-azure<5.4.0-1147.154
5.4.0-1147.154
ubuntu/linux-azure-5.15<5.15.0-1086.95~20.04.1
5.15.0-1086.95~20.04.1
ubuntu/linux-bluefield<5.4.0-1101.108
5.4.0-1101.108
ubuntu/linux-gcp<5.4.0-1145.154
5.4.0-1145.154
ubuntu/linux-gcp-5.15<5.15.0-1081.90~20.04.1
5.15.0-1081.90~20.04.1
ubuntu/linux-hwe-5.15<5.15.0-136.147~20.04.1
5.15.0-136.147~20.04.1
ubuntu/linux-ibm<5.4.0-1088.93
5.4.0-1088.93
ubuntu/linux-ibm-5.15<5.15.0-1074.77~20.04.1
5.15.0-1074.77~20.04.1
ubuntu/linux-intel-iotg-5.15<5.15.0-1077.83~20.04.1
5.15.0-1077.83~20.04.1
ubuntu/linux-iot<5.4.0-1048.51
5.4.0-1048.51
ubuntu/linux-kvm<5.4.0-1129.138
5.4.0-1129.138
ubuntu/linux-lowlatency-hwe-5.15<5.15.0-135.146~20.04.1
5.15.0-135.146~20.04.1
ubuntu/linux-oracle<5.4.0-1140.150
5.4.0-1140.150
ubuntu/linux-oracle-5.15<5.15.0-1077.83~20.04.1
5.15.0-1077.83~20.04.1
ubuntu/linux-raspi<5.4.0-1129.142
5.4.0-1129.142
ubuntu/linux-riscv-5.15<5.15.0-1075.79~20.04.1
5.15.0-1075.79~20.04.1
ubuntu/linux-xilinx-zynqmp<5.4.0-1060.64
5.4.0-1060.64
ubuntu/linux-aws-5.11*
ubuntu/linux-aws-5.13*
ubuntu/linux-aws-5.8*
ubuntu/linux-azure-5.11*
ubuntu/linux-azure-5.13*
ubuntu/linux-azure-5.8*
ubuntu/linux-azure-fde*
ubuntu/linux-gcp-5.11*
ubuntu/linux-gcp-5.13*
ubuntu/linux-gcp-5.8*
ubuntu/linux-gke*
ubuntu/linux-gke-5.15*
ubuntu/linux-gkeop*
ubuntu/linux-gkeop-5.15*
ubuntu/linux-hwe-5.11*
ubuntu/linux-hwe-5.13*
ubuntu/linux-hwe-5.8*
ubuntu/linux-intel-5.13*
ubuntu/linux-nvidia-tegra-5.15<5.15.0-1039.39~20.04.1
5.15.0-1039.39~20.04.1
ubuntu/linux-oem-5.10*
ubuntu/linux-oem-5.13*
ubuntu/linux-oem-5.6*
ubuntu/linux-oracle-5.11*
ubuntu/linux-oracle-5.13*
ubuntu/linux-oracle-5.8*
ubuntu/linux-raspi2*
ubuntu/linux-riscv*
ubuntu/linux-riscv-5.11*
ubuntu/linux-riscv-5.8*
ubuntu/linux-aws-fips<5.4.0-1142.153+fips1
5.4.0-1142.153+fips1
ubuntu/linux-azure-fips<5.4.0-1147.154+fips1
5.4.0-1147.154+fips1
ubuntu/linux-fips<5.4.0-1116.126
5.4.0-1116.126
ubuntu/linux-gcp-fips<5.4.0-1145.154+fips1
5.4.0-1145.154+fips1
ubuntu/linux-aws-fips*
ubuntu/linux-azure-fips*
ubuntu/linux-fips*
ubuntu/linux-gcp-fips*
ubuntu/linux<5.15.0-135.146
5.15.0-135.146
ubuntu/linux-allwinner-5.19*
ubuntu/linux-aws<5.15.0-1080.87
5.15.0-1080.87
ubuntu/linux-aws-5.19*
ubuntu/linux-aws-6.2*
ubuntu/linux-aws-6.5*
ubuntu/linux-aws-6.8<6.8.0-1027.29~22.04.1
6.8.0-1027.29~22.04.1
ubuntu/linux-azure<5.15.0-1084.93
5.15.0-1084.93
ubuntu/linux-azure-5.19*
ubuntu/linux-azure-6.2*
ubuntu/linux-azure-6.5*
ubuntu/linux-azure-6.8<6.8.0-1027.32~22.04.1
6.8.0-1027.32~22.04.1
ubuntu/linux-azure-fde<5.15.0-1084.93.1
5.15.0-1084.93.1
ubuntu/linux-azure-fde-5.19*
ubuntu/linux-azure-fde-6.2*
ubuntu/linux-gcp<5.15.0-1079.88
5.15.0-1079.88
ubuntu/linux-gcp-5.19*
ubuntu/linux-gcp-6.2*
ubuntu/linux-gcp-6.5*
ubuntu/linux-gcp-6.8<6.8.0-1028.30~22.04.1
6.8.0-1028.30~22.04.1
ubuntu/linux-gke<5.15.0-1077.83
5.15.0-1077.83
ubuntu/linux-gkeop<5.15.0-1062.70
5.15.0-1062.70
ubuntu/linux-hwe-5.19*
ubuntu/linux-hwe-6.2*
ubuntu/linux-hwe-6.5*
ubuntu/linux-hwe-6.8<6.8.0-58.60~22.04.1
6.8.0-58.60~22.04.1
ubuntu/linux-ibm<5.15.0-1072.75
5.15.0-1072.75
ubuntu/linux-ibm-6.8<6.8.0-1024.24~22.04.1
6.8.0-1024.24~22.04.1
ubuntu/linux-intel-iot-realtime<5.15.0-1073.75
5.15.0-1073.75
ubuntu/linux-intel-iotg<5.15.0-1075.81
5.15.0-1075.81
ubuntu/linux-kvm<5.15.0-1076.81
5.15.0-1076.81
ubuntu/linux-lowlatency<5.15.0-135.146
5.15.0-135.146
ubuntu/linux-lowlatency-hwe-5.19*
ubuntu/linux-lowlatency-hwe-6.2*
ubuntu/linux-lowlatency-hwe-6.5*
ubuntu/linux-lowlatency-hwe-6.8<6.8.0-58.60.1~22.04.1
6.8.0-58.60.1~22.04.1
ubuntu/linux-nvidia<5.15.0-1074.75
5.15.0-1074.75
ubuntu/linux-nvidia-6.2*
ubuntu/linux-nvidia-6.5*
ubuntu/linux-nvidia-6.8<6.8.0-1026.29~22.04.1
6.8.0-1026.29~22.04.1
ubuntu/linux-nvidia-tegra<5.15.0-1033.33
5.15.0-1033.33
ubuntu/linux-nvidia-tegra-igx<5.15.0-1021.21
5.15.0-1021.21
ubuntu/linux-oem-5.17*
ubuntu/linux-oem-6.0*
ubuntu/linux-oem-6.1*
ubuntu/linux-oem-6.5*
ubuntu/linux-oracle<5.15.0-1077.83
5.15.0-1077.83
ubuntu/linux-oracle-6.5*
ubuntu/linux-oracle-6.8<6.8.0-1024.25~22.04.1
6.8.0-1024.25~22.04.1
ubuntu/linux-raspi<5.15.0-1074.77
5.15.0-1074.77
ubuntu/linux-realtime*
ubuntu/linux-riscv*
ubuntu/linux-riscv-5.19*
ubuntu/linux-riscv-6.5*
ubuntu/linux-riscv-6.8<6.8.0-58.60.1~22.04.1
6.8.0-58.60.1~22.04.1
ubuntu/linux-starfive-5.19*
ubuntu/linux-starfive-6.2*
ubuntu/linux-starfive-6.5*
ubuntu/linux-xilinx-zynqmp<5.15.0-1044.48
5.15.0-1044.48
ubuntu/linux-bluefield<5.15.0-1062.64
5.15.0-1062.64
ubuntu/linux-realtime<5.15.0-1080.88
5.15.0-1080.88
ubuntu/linux-realtime-6.8<6.8.1-1020.21~22.04.1
6.8.1-1020.21~22.04.1
ubuntu/linux-aws-fips*
ubuntu/linux-azure-fips*
ubuntu/linux-fips*
ubuntu/linux-gcp-fips*
ubuntu/linux-aws-fips<5.15.0-1080.87+fips1
5.15.0-1080.87+fips1
ubuntu/linux-azure-fips<5.15.0-1083.92+fips1
5.15.0-1083.92+fips1
ubuntu/linux-fips<5.15.0-135.146+fips1
5.15.0-135.146+fips1
ubuntu/linux-gcp-fips<5.15.0-1079.88+fips1
5.15.0-1079.88+fips1
ubuntu/linux<6.8.0-58.60
6.8.0-58.60
ubuntu/linux-aws<6.8.0-1027.29
6.8.0-1027.29
ubuntu/linux-azure<6.8.0-1027.32
6.8.0-1027.32
ubuntu/linux-azure-6.11<6.11.0-1012.12~24.04.1
6.11.0-1012.12~24.04.1
ubuntu/linux-azure-nvidia<6.8.0-1014.15
6.8.0-1014.15
ubuntu/linux-gcp<6.8.0-1028.30
6.8.0-1028.30
ubuntu/linux-gcp-6.11<6.11.0-1011.11~24.04.1
6.11.0-1011.11~24.04.1
ubuntu/linux-gke<6.8.0-1023.27
6.8.0-1023.27
ubuntu/linux-gkeop<6.8.0-1010.12
6.8.0-1010.12
ubuntu/linux-hwe-6.11<6.11.0-21.21~24.04.1
6.11.0-21.21~24.04.1
ubuntu/linux-ibm<6.8.0-1024.24
6.8.0-1024.24
ubuntu/linux-lowlatency<6.8.0-58.60.1
6.8.0-58.60.1
ubuntu/linux-nvidia<6.8.0-1026.29
6.8.0-1026.29
ubuntu/linux-nvidia-6.11<6.11.0-1007.7
6.11.0-1007.7
ubuntu/linux-nvidia-lowlatency<6.8.0-1026.29.1
6.8.0-1026.29.1
ubuntu/linux-nvidia-tegra<6.8.0-1008.8
6.8.0-1008.8
ubuntu/linux-oem-6.11<6.11.0-1017.17
6.11.0-1017.17
ubuntu/linux-oem-6.8<6.8.0-1026.26
6.8.0-1026.26
ubuntu/linux-oracle<6.8.0-1024.25
6.8.0-1024.25
ubuntu/linux-raspi<6.8.0-1028.32
6.8.0-1028.32
ubuntu/linux-raspi-realtime*
ubuntu/linux-realtime*
ubuntu/linux-riscv<6.8.0-58.60.1
6.8.0-58.60.1
ubuntu/linux-xilinx<6.8.0-1017.18
6.8.0-1017.18
ubuntu/linux-raspi-realtime<6.8.0-2023.24
6.8.0-2023.24
ubuntu/linux-realtime<6.8.1-1020.21
6.8.1-1020.21
ubuntu/linux-fips<6.8.0-78.78+fips1
6.8.0-78.78+fips1
debian/linux
6.1.176-16.1.190-16.12.107-16.12.115-27.2.12-17.2.15-1
debian/linux<6.1.128-1
6.1.128-1
debian/linux<6.12.5-1
6.12.5-1
debian/linux<6.12.5-1
6.12.5-1

Remediation

Recommended actions to resolve this vulnerability, in priority order.

  1. Upgrade

    Upgrade debian/linux to a version that resolves this vulnerability.

    Fixed in 5.10.234-1Fixed in 6.1.129-1Fixed in 6.1.135-1Fixed in 6.12.27-1
  2. Upgrade

    Upgrade debian/linux-6.1 to a version that resolves this vulnerability.

    Fixed in 6.1.129-1~deb11u1
  3. Upgrade

    Upgrade ubuntu/linux-aws to a version that resolves this vulnerability.

    Fixed in 4.4.0-1143.149
  4. Upgrade

    Upgrade ubuntu/linux-azure to a version that resolves this vulnerability.

    Fixed in 4.15.0-1188.203~14.04.1
  5. Upgrade

    Upgrade ubuntu/linux-lts-xenial to a version that resolves this vulnerability.

    Fixed in 4.4.0-268.302~14.04.1
  6. Upgrade

    Upgrade ubuntu/linux to a version that resolves this vulnerability.

    Fixed in 4.4.0-268.302
  7. Upgrade

    Upgrade ubuntu/linux-aws to a version that resolves this vulnerability.

    Fixed in 4.4.0-1181.196
  8. Upgrade

    Upgrade ubuntu/linux-aws-hwe to a version that resolves this vulnerability.

    Fixed in 4.15.0-1180.193~16.04.1
  9. Upgrade

    Upgrade ubuntu/linux-azure to a version that resolves this vulnerability.

    Fixed in 4.15.0-1188.203~16.04.1
  10. Upgrade

    Upgrade ubuntu/linux-gcp to a version that resolves this vulnerability.

    Fixed in 4.15.0-1173.190~16.04.1
  11. Upgrade

    Upgrade ubuntu/linux-hwe to a version that resolves this vulnerability.

    Fixed in 4.15.0-237.249~16.04.1
  12. Upgrade

    Upgrade ubuntu/linux-kvm to a version that resolves this vulnerability.

    Fixed in 4.4.0-1144.155
  13. Upgrade

    Upgrade ubuntu/linux-oracle to a version that resolves this vulnerability.

    Fixed in 4.15.0-1142.153~16.04.1
  14. Upgrade

    Upgrade ubuntu/linux-fips to a version that resolves this vulnerability.

    Fixed in 4.4.0-1113.120
  15. Upgrade

    Upgrade ubuntu/linux to a version that resolves this vulnerability.

    Fixed in 4.15.0-237.249
  16. Upgrade

    Upgrade ubuntu/linux-aws to a version that resolves this vulnerability.

    Fixed in 4.15.0-1180.193
  17. Upgrade

    Upgrade ubuntu/linux-aws-5.4 to a version that resolves this vulnerability.

    Fixed in 5.4.0-1142.152~18.04.1
  18. Upgrade

    Upgrade ubuntu/linux-azure-4.15 to a version that resolves this vulnerability.

    Fixed in 4.15.0-1188.203
  19. Upgrade

    Upgrade ubuntu/linux-azure-5.4 to a version that resolves this vulnerability.

    Fixed in 5.4.0-1147.154~18.04.1
  20. Upgrade

    Upgrade ubuntu/linux-gcp-4.15 to a version that resolves this vulnerability.

    Fixed in 4.15.0-1173.190
  21. Upgrade

    Upgrade ubuntu/linux-gcp-5.4 to a version that resolves this vulnerability.

    Fixed in 5.4.0-1145.154~18.04.1
  22. Upgrade

    Upgrade ubuntu/linux-hwe-5.4 to a version that resolves this vulnerability.

    Fixed in 5.4.0-211.231~18.04.1
  23. Upgrade

    Upgrade ubuntu/linux-ibm-5.4 to a version that resolves this vulnerability.

    Fixed in 5.4.0-1090.95~18.04.1
  24. Upgrade

    Upgrade ubuntu/linux-kvm to a version that resolves this vulnerability.

    Fixed in 4.15.0-1163.168
  25. Upgrade

    Upgrade ubuntu/linux-oracle to a version that resolves this vulnerability.

    Fixed in 4.15.0-1142.153
  26. Upgrade

    Upgrade ubuntu/linux-oracle-5.4 to a version that resolves this vulnerability.

    Fixed in 5.4.0-1140.149~18.04.1
  27. Upgrade

    Upgrade ubuntu/linux-raspi-5.4 to a version that resolves this vulnerability.

    Fixed in 5.4.0-1129.142~18.04.1
  28. Upgrade

    Upgrade ubuntu/linux-aws-fips to a version that resolves this vulnerability.

    Fixed in 4.15.0-2118.124
  29. Upgrade

    Upgrade ubuntu/linux-azure-fips to a version that resolves this vulnerability.

    Fixed in 4.15.0-2097.103
  30. Upgrade

    Upgrade ubuntu/linux-fips to a version that resolves this vulnerability.

    Fixed in 4.15.0-1135.146
  31. Upgrade

    Upgrade ubuntu/linux-gcp-fips to a version that resolves this vulnerability.

    Fixed in 4.15.0-2081.87
  32. Upgrade

    Upgrade ubuntu/linux to a version that resolves this vulnerability.

    Fixed in 5.4.0-211.231
  33. Upgrade

    Upgrade ubuntu/linux-aws to a version that resolves this vulnerability.

    Fixed in 5.4.0-1142.152
  34. Upgrade

    Upgrade ubuntu/linux-aws-5.15 to a version that resolves this vulnerability.

    Fixed in 5.15.0-1080.87~20.04.1
  35. Upgrade

    Upgrade ubuntu/linux-azure to a version that resolves this vulnerability.

    Fixed in 5.4.0-1147.154
  36. Upgrade

    Upgrade ubuntu/linux-azure-5.15 to a version that resolves this vulnerability.

    Fixed in 5.15.0-1086.95~20.04.1
  37. Upgrade

    Upgrade ubuntu/linux-bluefield to a version that resolves this vulnerability.

    Fixed in 5.4.0-1101.108
  38. Upgrade

    Upgrade ubuntu/linux-gcp to a version that resolves this vulnerability.

    Fixed in 5.4.0-1145.154
  39. Upgrade

    Upgrade ubuntu/linux-gcp-5.15 to a version that resolves this vulnerability.

    Fixed in 5.15.0-1081.90~20.04.1
  40. Upgrade

    Upgrade ubuntu/linux-hwe-5.15 to a version that resolves this vulnerability.

    Fixed in 5.15.0-136.147~20.04.1
  41. Upgrade

    Upgrade ubuntu/linux-ibm to a version that resolves this vulnerability.

    Fixed in 5.4.0-1088.93
  42. Upgrade

    Upgrade ubuntu/linux-ibm-5.15 to a version that resolves this vulnerability.

    Fixed in 5.15.0-1074.77~20.04.1
  43. Upgrade

    Upgrade ubuntu/linux-intel-iotg-5.15 to a version that resolves this vulnerability.

    Fixed in 5.15.0-1077.83~20.04.1
  44. Upgrade

    Upgrade ubuntu/linux-iot to a version that resolves this vulnerability.

    Fixed in 5.4.0-1048.51
  45. Upgrade

    Upgrade ubuntu/linux-kvm to a version that resolves this vulnerability.

    Fixed in 5.4.0-1129.138
  46. Upgrade

    Upgrade ubuntu/linux-lowlatency-hwe-5.15 to a version that resolves this vulnerability.

    Fixed in 5.15.0-135.146~20.04.1
  47. Upgrade

    Upgrade ubuntu/linux-oracle to a version that resolves this vulnerability.

    Fixed in 5.4.0-1140.150
  48. Upgrade

    Upgrade ubuntu/linux-oracle-5.15 to a version that resolves this vulnerability.

    Fixed in 5.15.0-1077.83~20.04.1
  49. Upgrade

    Upgrade ubuntu/linux-raspi to a version that resolves this vulnerability.

    Fixed in 5.4.0-1129.142
  50. Upgrade

    Upgrade ubuntu/linux-riscv-5.15 to a version that resolves this vulnerability.

    Fixed in 5.15.0-1075.79~20.04.1
  51. Upgrade

    Upgrade ubuntu/linux-xilinx-zynqmp to a version that resolves this vulnerability.

    Fixed in 5.4.0-1060.64
  52. Upgrade

    Upgrade ubuntu/linux-nvidia-tegra-5.15 to a version that resolves this vulnerability.

    Fixed in 5.15.0-1039.39~20.04.1
  53. Upgrade

    Upgrade ubuntu/linux-aws-fips to a version that resolves this vulnerability.

    Fixed in 5.4.0-1142.153+fips1
  54. Upgrade

    Upgrade ubuntu/linux-azure-fips to a version that resolves this vulnerability.

    Fixed in 5.4.0-1147.154+fips1
  55. Upgrade

    Upgrade ubuntu/linux-fips to a version that resolves this vulnerability.

    Fixed in 5.4.0-1116.126
  56. Upgrade

    Upgrade ubuntu/linux-gcp-fips to a version that resolves this vulnerability.

    Fixed in 5.4.0-1145.154+fips1
  57. Upgrade

    Upgrade ubuntu/linux to a version that resolves this vulnerability.

    Fixed in 5.15.0-135.146
  58. Upgrade

    Upgrade ubuntu/linux-aws to a version that resolves this vulnerability.

    Fixed in 5.15.0-1080.87
  59. Upgrade

    Upgrade ubuntu/linux-aws-6.8 to a version that resolves this vulnerability.

    Fixed in 6.8.0-1027.29~22.04.1
  60. Upgrade

    Upgrade ubuntu/linux-azure to a version that resolves this vulnerability.

    Fixed in 5.15.0-1084.93
  61. Upgrade

    Upgrade ubuntu/linux-azure-6.8 to a version that resolves this vulnerability.

    Fixed in 6.8.0-1027.32~22.04.1
  62. Upgrade

    Upgrade ubuntu/linux-azure-fde to a version that resolves this vulnerability.

    Fixed in 5.15.0-1084.93.1
  63. Upgrade

    Upgrade ubuntu/linux-gcp to a version that resolves this vulnerability.

    Fixed in 5.15.0-1079.88
  64. Upgrade

    Upgrade ubuntu/linux-gcp-6.8 to a version that resolves this vulnerability.

    Fixed in 6.8.0-1028.30~22.04.1
  65. Upgrade

    Upgrade ubuntu/linux-gke to a version that resolves this vulnerability.

    Fixed in 5.15.0-1077.83
  66. Upgrade

    Upgrade ubuntu/linux-gkeop to a version that resolves this vulnerability.

    Fixed in 5.15.0-1062.70
  67. Upgrade

    Upgrade ubuntu/linux-hwe-6.8 to a version that resolves this vulnerability.

    Fixed in 6.8.0-58.60~22.04.1
  68. Upgrade

    Upgrade ubuntu/linux-ibm to a version that resolves this vulnerability.

    Fixed in 5.15.0-1072.75
  69. Upgrade

    Upgrade ubuntu/linux-ibm-6.8 to a version that resolves this vulnerability.

    Fixed in 6.8.0-1024.24~22.04.1
  70. Upgrade

    Upgrade ubuntu/linux-intel-iot-realtime to a version that resolves this vulnerability.

    Fixed in 5.15.0-1073.75
  71. Upgrade

    Upgrade ubuntu/linux-intel-iotg to a version that resolves this vulnerability.

    Fixed in 5.15.0-1075.81
  72. Upgrade

    Upgrade ubuntu/linux-kvm to a version that resolves this vulnerability.

    Fixed in 5.15.0-1076.81
  73. Upgrade

    Upgrade ubuntu/linux-lowlatency to a version that resolves this vulnerability.

    Fixed in 5.15.0-135.146
  74. Upgrade

    Upgrade ubuntu/linux-lowlatency-hwe-6.8 to a version that resolves this vulnerability.

    Fixed in 6.8.0-58.60.1~22.04.1
  75. Upgrade

    Upgrade ubuntu/linux-nvidia to a version that resolves this vulnerability.

    Fixed in 5.15.0-1074.75
  76. Upgrade

    Upgrade ubuntu/linux-nvidia-6.8 to a version that resolves this vulnerability.

    Fixed in 6.8.0-1026.29~22.04.1
  77. Upgrade

    Upgrade ubuntu/linux-nvidia-tegra to a version that resolves this vulnerability.

    Fixed in 5.15.0-1033.33
  78. Upgrade

    Upgrade ubuntu/linux-nvidia-tegra-igx to a version that resolves this vulnerability.

    Fixed in 5.15.0-1021.21
  79. Upgrade

    Upgrade ubuntu/linux-oracle to a version that resolves this vulnerability.

    Fixed in 5.15.0-1077.83
  80. Upgrade

    Upgrade ubuntu/linux-oracle-6.8 to a version that resolves this vulnerability.

    Fixed in 6.8.0-1024.25~22.04.1
  81. Upgrade

    Upgrade ubuntu/linux-raspi to a version that resolves this vulnerability.

    Fixed in 5.15.0-1074.77
  82. Upgrade

    Upgrade ubuntu/linux-riscv-6.8 to a version that resolves this vulnerability.

    Fixed in 6.8.0-58.60.1~22.04.1
  83. Upgrade

    Upgrade ubuntu/linux-xilinx-zynqmp to a version that resolves this vulnerability.

    Fixed in 5.15.0-1044.48
  84. Upgrade

    Upgrade ubuntu/linux-bluefield to a version that resolves this vulnerability.

    Fixed in 5.15.0-1062.64
  85. Upgrade

    Upgrade ubuntu/linux-realtime to a version that resolves this vulnerability.

    Fixed in 5.15.0-1080.88
  86. Upgrade

    Upgrade ubuntu/linux-realtime-6.8 to a version that resolves this vulnerability.

    Fixed in 6.8.1-1020.21~22.04.1
  87. Upgrade

    Upgrade ubuntu/linux-aws-fips to a version that resolves this vulnerability.

    Fixed in 5.15.0-1080.87+fips1
  88. Upgrade

    Upgrade ubuntu/linux-azure-fips to a version that resolves this vulnerability.

    Fixed in 5.15.0-1083.92+fips1
  89. Upgrade

    Upgrade ubuntu/linux-fips to a version that resolves this vulnerability.

    Fixed in 5.15.0-135.146+fips1
  90. Upgrade

    Upgrade ubuntu/linux-gcp-fips to a version that resolves this vulnerability.

    Fixed in 5.15.0-1079.88+fips1
  91. Upgrade

    Upgrade ubuntu/linux to a version that resolves this vulnerability.

    Fixed in 6.8.0-58.60
  92. Upgrade

    Upgrade ubuntu/linux-aws to a version that resolves this vulnerability.

    Fixed in 6.8.0-1027.29
  93. Upgrade

    Upgrade ubuntu/linux-azure to a version that resolves this vulnerability.

    Fixed in 6.8.0-1027.32
  94. Upgrade

    Upgrade ubuntu/linux-azure-6.11 to a version that resolves this vulnerability.

    Fixed in 6.11.0-1012.12~24.04.1
  95. Upgrade

    Upgrade ubuntu/linux-azure-nvidia to a version that resolves this vulnerability.

    Fixed in 6.8.0-1014.15
  96. Upgrade

    Upgrade ubuntu/linux-gcp to a version that resolves this vulnerability.

    Fixed in 6.8.0-1028.30
  97. Upgrade

    Upgrade ubuntu/linux-gcp-6.11 to a version that resolves this vulnerability.

    Fixed in 6.11.0-1011.11~24.04.1
  98. Upgrade

    Upgrade ubuntu/linux-gke to a version that resolves this vulnerability.

    Fixed in 6.8.0-1023.27
  99. Upgrade

    Upgrade ubuntu/linux-gkeop to a version that resolves this vulnerability.

    Fixed in 6.8.0-1010.12
  100. Upgrade

    Upgrade ubuntu/linux-hwe-6.11 to a version that resolves this vulnerability.

    Fixed in 6.11.0-21.21~24.04.1
  101. Upgrade

    Upgrade ubuntu/linux-ibm to a version that resolves this vulnerability.

    Fixed in 6.8.0-1024.24
  102. Upgrade

    Upgrade ubuntu/linux-lowlatency to a version that resolves this vulnerability.

    Fixed in 6.8.0-58.60.1
  103. Upgrade

    Upgrade ubuntu/linux-nvidia to a version that resolves this vulnerability.

    Fixed in 6.8.0-1026.29
  104. Upgrade

    Upgrade ubuntu/linux-nvidia-6.11 to a version that resolves this vulnerability.

    Fixed in 6.11.0-1007.7
  105. Upgrade

    Upgrade ubuntu/linux-nvidia-lowlatency to a version that resolves this vulnerability.

    Fixed in 6.8.0-1026.29.1
  106. Upgrade

    Upgrade ubuntu/linux-nvidia-tegra to a version that resolves this vulnerability.

    Fixed in 6.8.0-1008.8
  107. Upgrade

    Upgrade ubuntu/linux-oem-6.11 to a version that resolves this vulnerability.

    Fixed in 6.11.0-1017.17
  108. Upgrade

    Upgrade ubuntu/linux-oem-6.8 to a version that resolves this vulnerability.

    Fixed in 6.8.0-1026.26
  109. Upgrade

    Upgrade ubuntu/linux-oracle to a version that resolves this vulnerability.

    Fixed in 6.8.0-1024.25
  110. Upgrade

    Upgrade ubuntu/linux-raspi to a version that resolves this vulnerability.

    Fixed in 6.8.0-1028.32
  111. Upgrade

    Upgrade ubuntu/linux-riscv to a version that resolves this vulnerability.

    Fixed in 6.8.0-58.60.1
  112. Upgrade

    Upgrade ubuntu/linux-xilinx to a version that resolves this vulnerability.

    Fixed in 6.8.0-1017.18
  113. Upgrade

    Upgrade ubuntu/linux-raspi-realtime to a version that resolves this vulnerability.

    Fixed in 6.8.0-2023.24
  114. Upgrade

    Upgrade ubuntu/linux-realtime to a version that resolves this vulnerability.

    Fixed in 6.8.1-1020.21
  115. Upgrade

    Upgrade ubuntu/linux-fips to a version that resolves this vulnerability.

    Fixed in 6.8.0-78.78+fips1
  116. Configuration

    In drivers/scsi/sg.c in sg_release(), move the call to kref_put(&sfp->f_ref, sg_remove_sfp) so it occurs after unlocking the open_rel_lock mutex. This ensures sg_remove_sfp_usercontext() cleanup can run without any use-after-free references to sfp/sdp after the reference count is decremented.

    Linux kernel (scsi: sg) sg_release() cleanup sequencing = kref_put after unlocking open_rel_lock

Event History

Dec 27, 2024
CVE Published
via MITRE·03:02 PM
Data Sourced
via MITRE·03:02 PM
DescriptionSeverity
Data Sourced
via OSV·03:15 PM
DescriptionSeverityAffected Software
Event
via OSV·03:15 PM
Data Sourced
via NVD·03:15 PM
RemedyDescriptionSeverityWeaknessAffected Software
Data Sourced
via Red Hat·04:01 PM
DescriptionSeverityAffected Software

Parent advisories

This vulnerability appears in the following advisories.

Peer vulnerabilities

Found alongside the following vulnerabilities.

Frequently Asked Questions

1

What is the severity of CVE-2024-56631?

CVE-2024-56631 has a medium severity rating due to its potential to cause a use-after-free condition in the Linux kernel.

2

How do I fix CVE-2024-56631?

To fix CVE-2024-56631, upgrade your Linux kernel to a version that includes the patch for this vulnerability.

3

Which Linux kernel versions are affected by CVE-2024-56631?

CVE-2024-56631 affects Linux kernel versions from 3.16.85 to 6.6.66 and versions between 6.7 and 6.12.5.

4

What causes the CVE-2024-56631 vulnerability?

CVE-2024-56631 is caused by a use-after-free bug in the sg_release() function in the Linux kernel.

5

Is CVE-2024-56631 detectable by security tools?

Yes, CVE-2024-56631 can be detected by security tools that utilize Kernel Address Sanitizer (KASAN) during their testing processes.

Company

Resources

Contact

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