CVE-2024-56640: net/smc: fix LGR and link use-after-free issue

Published Dec 27, 2024
·
Updated

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

net/smc: fix LGR and link use-after-free issue

We encountered a LGR/link use-after-free issue, which manifested as the LGR/link refcnt reaching 0 early and entering the clear process, making resource access unsafe.

refcountt: addition on 0; use-after-free. WARNING: CPU: 14 PID: 107447 at lib/refcount.c:25 refcountwarnsaturate+0x9c/0x140 Workqueue: events smclgrterminatework [smc] Call trace: refcountwarnsaturate+0x9c/0x140 smclgrterminate.part.45+0x2a8/0x370 [smc] smclgrterminatework+0x28/0x30 [smc] processonework+0x1b8/0x420 workerthread+0x158/0x510 kthread+0x114/0x118

or

refcountt: underflow; use-after-free. WARNING: CPU: 6 PID: 93140 at lib/refcount.c:28 refcountwarnsaturate+0xf0/0x140 Workqueue: smchswq smclistenwork [smc] Call trace: refcountwarnsaturate+0xf0/0x140 smcrlinkput+0x1cc/0x1d8 [smc] smcconnfree+0x110/0x1b0 [smc] smcconnabort+0x50/0x60 [smc] smclistenfinddevice+0x75c/0x790 [smc] smclistenwork+0x368/0x8a0 [smc] processonework+0x1b8/0x420 workerthread+0x158/0x510 kthread+0x114/0x118

It is caused by repeated release of LGR/link refcnt. One suspect is that smcconnfree() is called repeatedly because some smcconnfree() from server listening path are not protected by sock lock.

e.g.

Calls under socklock | smclistenwork ------------------------------------------------------- locksock(sk) | smcconnabort smcconnfree | \- smcconnfree \- smcrlinkput | \- smcrlinkput (duplicated) releasesock(sk)

So here add sock lock protection in smclistenwork() path, making it exclusive with other connection operations.

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

191 affected componentsFixes available
Microsoft azl3 kernel 6.6.64.2-9
Patch available
Microsoft cbl2 kernel 5.15.173.1-2
Patch available
Microsoft azl3 kernel 6.6.76.1-1
Patch available
Microsoft cbl2 kernel 5.15.176.3-1
Patch available
Linux Linux kernel>=4.18<5.15.174
Linux Linux kernel>=5.16<6.1.120
Linux Linux kernel>=6.2<6.6.66
Linux Linux kernel>=6.7<6.12.5
Linux Linux kernel=6.13-rc1
debian/linux<6.1.123-1
6.1.123-1
debian/linux<6.12.5-1
6.12.5-1
debian/linux<6.12.5-1
6.12.5-1
debian/linux
6.1.176-16.1.190-16.12.107-16.12.115-27.2.12-17.2.15-1
ubuntu/linux-hwe-edge*
ubuntu/linux-aws-5.0*
ubuntu/linux-aws-5.3*
ubuntu/linux-aws-5.4<5.4.0-1156.166~18.04.1
5.4.0-1156.166~18.04.1
ubuntu/linux-azure*
ubuntu/linux-azure-5.3*
ubuntu/linux-azure-5.4<5.4.0-1161.167~18.04.1
5.4.0-1161.167~18.04.1
ubuntu/linux-azure-edge*
ubuntu/linux-gcp*
ubuntu/linux-gcp-5.3*
ubuntu/linux-gcp-5.4<5.4.0-1159.168~18.04.1
5.4.0-1159.168~18.04.1
ubuntu/linux-gke-4.15*
ubuntu/linux-gke-5.4*
ubuntu/linux-gkeop-5.4*
ubuntu/linux-hwe*
ubuntu/linux-hwe-5.4<5.4.0-227.247~18.04.1
5.4.0-227.247~18.04.1
ubuntu/linux-hwe-edge*
ubuntu/linux-ibm-5.4<5.4.0-1102.107~18.04.1
5.4.0-1102.107~18.04.1
ubuntu/linux-oem*
ubuntu/linux-oracle-5.0*
ubuntu/linux-oracle-5.3*
ubuntu/linux-oracle-5.4<5.4.0-1154.164~18.04.1
5.4.0-1154.164~18.04.1
ubuntu/linux-raspi-5.4<5.4.0-1139.152~18.04.1
5.4.0-1139.152~18.04.1
ubuntu/linux-aws-5.15<5.15.0-1080.87~20.04.1
5.15.0-1080.87~20.04.1
ubuntu/linux-azure-5.15<5.15.0-1086.95~20.04.1
5.15.0-1086.95~20.04.1
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-5.15<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-lowlatency-hwe-5.15<5.15.0-135.146~20.04.1
5.15.0-135.146~20.04.1
ubuntu/linux-oracle-5.15<5.15.0-1077.83~20.04.1
5.15.0-1077.83~20.04.1
ubuntu/linux-riscv-5.15<5.15.0-1075.79~20.04.1
5.15.0-1075.79~20.04.1
ubuntu/linux<5.4.0-227.247
5.4.0-227.247
ubuntu/linux-aws<5.4.0-1156.166
5.4.0-1156.166
ubuntu/linux-aws-5.11*
ubuntu/linux-aws-5.13*
ubuntu/linux-aws-5.8*
ubuntu/linux-azure<5.4.0-1160.166
5.4.0-1160.166
ubuntu/linux-azure-5.11*
ubuntu/linux-azure-5.13*
ubuntu/linux-azure-5.8*
ubuntu/linux-azure-fde*
ubuntu/linux-bluefield<5.4.0-1116.123
5.4.0-1116.123
ubuntu/linux-gcp<5.4.0-1159.168
5.4.0-1159.168
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-ibm<5.4.0-1102.107
5.4.0-1102.107
ubuntu/linux-intel-5.13*
ubuntu/linux-iot<5.4.0-1060.63
5.4.0-1060.63
ubuntu/linux-kvm<5.4.0-1143.152
5.4.0-1143.152
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<5.4.0-1154.164
5.4.0-1154.164
ubuntu/linux-oracle-5.11*
ubuntu/linux-oracle-5.13*
ubuntu/linux-oracle-5.8*
ubuntu/linux-raspi<5.4.0-1139.152
5.4.0-1139.152
ubuntu/linux-raspi2*
ubuntu/linux-riscv*
ubuntu/linux-riscv-5.11*
ubuntu/linux-riscv-5.8*
ubuntu/linux-xilinx-zynqmp<5.4.0-1074.78
5.4.0-1074.78
ubuntu/linux-aws-fips<5.4.0-1155.165+fips1
5.4.0-1155.165+fips1
ubuntu/linux-azure-fips<5.4.0-1160.166+fips1
5.4.0-1160.166+fips1
ubuntu/linux-fips<5.4.0-1130.140
5.4.0-1130.140
ubuntu/linux-gcp-fips<5.4.0-1159.168+fips1
5.4.0-1159.168+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
ubuntu/linux-vmware*

Remediation

Recommended actions to resolve this vulnerability, in priority order.

  1. Upgrade

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

    Fixed in 6.1.123-1
  2. Upgrade

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

    Fixed in 6.12.5-1
  3. Upgrade

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

    Fixed in 6.1.176-1Fixed in 6.1.190-1Fixed in 6.12.107-1Fixed in 6.12.115-2Fixed in 7.2.12-1Fixed in 7.2.15-1
  4. Upgrade

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

    Fixed in 5.4.0-1156.166~18.04.1
  5. Upgrade

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

    Fixed in 5.4.0-1161.167~18.04.1
  6. Upgrade

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

    Fixed in 5.4.0-1159.168~18.04.1
  7. Upgrade

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

    Fixed in 5.4.0-227.247~18.04.1
  8. Upgrade

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

    Fixed in 5.4.0-1102.107~18.04.1
  9. Upgrade

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

    Fixed in 5.4.0-1154.164~18.04.1
  10. Upgrade

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

    Fixed in 5.4.0-1139.152~18.04.1
  11. Upgrade

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

    Fixed in 5.15.0-1080.87~20.04.1
  12. Upgrade

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

    Fixed in 5.15.0-1086.95~20.04.1
  13. Upgrade

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

    Fixed in 5.15.0-1081.90~20.04.1
  14. Upgrade

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

    Fixed in 5.15.0-136.147~20.04.1
  15. Upgrade

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

    Fixed in 5.15.0-1074.77~20.04.1
  16. 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
  17. 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
  18. Upgrade

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

    Fixed in 5.15.0-1077.83~20.04.1
  19. Upgrade

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

    Fixed in 5.15.0-1075.79~20.04.1
  20. Upgrade

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

    Fixed in 5.4.0-227.247
  21. Upgrade

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

    Fixed in 5.4.0-1156.166
  22. Upgrade

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

    Fixed in 5.4.0-1160.166
  23. Upgrade

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

    Fixed in 5.4.0-1116.123
  24. Upgrade

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

    Fixed in 5.4.0-1159.168
  25. Upgrade

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

    Fixed in 5.4.0-1102.107
  26. Upgrade

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

    Fixed in 5.4.0-1060.63
  27. Upgrade

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

    Fixed in 5.4.0-1143.152
  28. 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
  29. Upgrade

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

    Fixed in 5.4.0-1154.164
  30. Upgrade

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

    Fixed in 5.4.0-1139.152
  31. Upgrade

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

    Fixed in 5.4.0-1074.78
  32. Upgrade

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

    Fixed in 5.4.0-1155.165+fips1
  33. Upgrade

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

    Fixed in 5.4.0-1160.166+fips1
  34. Upgrade

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

    Fixed in 5.4.0-1130.140
  35. Upgrade

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

    Fixed in 5.4.0-1159.168+fips1
  36. Upgrade

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

    Fixed in 5.15.0-135.146
  37. Upgrade

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

    Fixed in 5.15.0-1080.87
  38. Upgrade

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

    Fixed in 6.8.0-1027.29~22.04.1
  39. Upgrade

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

    Fixed in 5.15.0-1084.93
  40. Upgrade

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

    Fixed in 6.8.0-1027.32~22.04.1
  41. Upgrade

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

    Fixed in 5.15.0-1084.93.1
  42. Upgrade

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

    Fixed in 5.15.0-1079.88
  43. Upgrade

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

    Fixed in 6.8.0-1028.30~22.04.1
  44. Upgrade

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

    Fixed in 5.15.0-1077.83
  45. Upgrade

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

    Fixed in 5.15.0-1062.70
  46. Upgrade

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

    Fixed in 6.8.0-58.60~22.04.1
  47. Upgrade

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

    Fixed in 5.15.0-1072.75
  48. Upgrade

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

    Fixed in 6.8.0-1024.24~22.04.1
  49. Upgrade

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

    Fixed in 5.15.0-1073.75
  50. Upgrade

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

    Fixed in 5.15.0-1075.81
  51. Upgrade

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

    Fixed in 5.15.0-1076.81
  52. Upgrade

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

    Fixed in 5.15.0-135.146
  53. 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
  54. Upgrade

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

    Fixed in 5.15.0-1074.75
  55. Upgrade

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

    Fixed in 6.8.0-1026.29~22.04.1
  56. Upgrade

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

    Fixed in 5.15.0-1033.33
  57. Upgrade

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

    Fixed in 5.15.0-1021.21
  58. Upgrade

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

    Fixed in 5.15.0-1077.83
  59. Upgrade

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

    Fixed in 6.8.0-1024.25~22.04.1
  60. Upgrade

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

    Fixed in 5.15.0-1074.77
  61. 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
  62. Upgrade

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

    Fixed in 5.15.0-1044.48
  63. Upgrade

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

    Fixed in 5.15.0-1062.64
  64. Upgrade

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

    Fixed in 5.15.0-1080.88
  65. Upgrade

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

    Fixed in 6.8.1-1020.21~22.04.1
  66. Upgrade

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

    Fixed in 5.15.0-1080.87+fips1
  67. Upgrade

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

    Fixed in 5.15.0-1083.92+fips1
  68. Upgrade

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

    Fixed in 5.15.0-135.146+fips1
  69. Upgrade

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

    Fixed in 5.15.0-1079.88+fips1
  70. Upgrade

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

    Fixed in 6.8.0-58.60
  71. Upgrade

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

    Fixed in 6.8.0-1027.29
  72. Upgrade

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

    Fixed in 6.8.0-1027.32
  73. Upgrade

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

    Fixed in 6.11.0-1012.12~24.04.1
  74. Upgrade

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

    Fixed in 6.8.0-1014.15
  75. Upgrade

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

    Fixed in 6.8.0-1028.30
  76. Upgrade

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

    Fixed in 6.11.0-1011.11~24.04.1
  77. Upgrade

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

    Fixed in 6.8.0-1023.27
  78. Upgrade

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

    Fixed in 6.8.0-1010.12
  79. Upgrade

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

    Fixed in 6.11.0-21.21~24.04.1
  80. Upgrade

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

    Fixed in 6.8.0-1024.24
  81. Upgrade

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

    Fixed in 6.8.0-58.60.1
  82. Upgrade

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

    Fixed in 6.8.0-1026.29
  83. Upgrade

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

    Fixed in 6.11.0-1007.7
  84. Upgrade

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

    Fixed in 6.8.0-1026.29.1
  85. Upgrade

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

    Fixed in 6.8.0-1008.8
  86. Upgrade

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

    Fixed in 6.11.0-1017.17
  87. Upgrade

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

    Fixed in 6.8.0-1026.26
  88. Upgrade

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

    Fixed in 6.8.0-1024.25
  89. Upgrade

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

    Fixed in 6.8.0-1028.32
  90. Upgrade

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

    Fixed in 6.8.0-58.60.1
  91. Upgrade

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

    Fixed in 6.8.0-1017.18
  92. Upgrade

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

    Fixed in 6.8.0-2023.24
  93. Upgrade

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

    Fixed in 6.8.1-1020.21
  94. Upgrade

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

    Fixed in 6.8.0-78.78+fips1
  95. Compensating control

    Add sock lock protection in the net/smc smc_listen_work() path, using lock_sock(sk) and release_sock(sk), so it is exclusive with other connection operations and prevents repeated smc_conn_free() calls.

Event History

Dec 27, 2024
CVE Published
via Ubuntu·12:00 AM
Data Sourced
via Ubuntu·12:00 AM
RemedyDescriptionSeverityAffected Software
CVE Published
via MITRE·03:02 PM
Data Sourced
via MITRE·03:02 PM
DescriptionSeverity
Data Sourced
via OSV·03:15 PM
DescriptionSeverityAffected Software
Data Sourced
via NVD·03:15 PM
RemedyDescriptionSeverityWeaknessAffected Software
Mar 8, 2025
Data Sourced
via Microsoft·08:00 AM
DescriptionSeverityWeakness
Data Sourced
via Microsoft·08:00 AM
Affected Software

Peer vulnerabilities

Found alongside the following vulnerabilities.

Frequently Asked Questions

1

What is the severity of CVE-2024-56640?

CVE-2024-56640 is considered a critical vulnerability due to the potential for a use-after-free condition leading to unsafe resource access.

2

How do I fix CVE-2024-56640?

To fix CVE-2024-56640, you should update your Linux kernel to a version that includes the patch for this vulnerability.

3

Which versions of the Linux kernel are affected by CVE-2024-56640?

CVE-2024-56640 affects Linux kernel versions between 4.18 and 5.15.174, 5.16 and 6.1.120, 6.2 and 6.6.66, 6.7 and 6.12.5, and specifically 6.13-rc1.

4

What impact does CVE-2024-56640 have on system security?

The use-after-free issue in CVE-2024-56640 can lead to unauthorized access to system resources, potentially allowing attackers to execute arbitrary code.

5

Is CVE-2024-56640 likely to be exploited in the wild?

Given the severity and nature of CVE-2024-56640, it is likely that it could be targeted by attackers if not properly mitigated.

Company

Resources

Contact

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