CVE-2024-39489 ipv6: sr: fix memleak in seg6_hmac_init_algo

2024-07-1007:14:08

Linux

github.com

linux kernel

ipv6

memleak

vulnerability

fix

AI Score

Confidence

Low

EPSS

Percentile

5.0%

SSVC

Exploitation

none

Automatable

Technical Impact

partial

JSON

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

ipv6: sr: fix memleak in seg6_hmac_init_algo

seg6_hmac_init_algo returns without cleaning up the previous allocations
if one fails, so it’s going to leak all that memory and the crypto tfms.

Update seg6_hmac_exit to only free the memory when allocated, so we can
reuse the code directly.

CNA Affected

[
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    "vendor": "Linux",
    "product": "Linux",
    "versions": [
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        "status": "affected",
        "version": "bf355b8d2c30",
        "lessThan": "afd5730969ae",
        "versionType": "git"
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        "version": "bf355b8d2c30",
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      }
    ],
    "programFiles": [
      "net/ipv6/seg6_hmac.c"
    ],
    "defaultStatus": "unaffected"
  },
  {
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "vendor": "Linux",
    "product": "Linux",
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        "status": "affected",
        "version": "4.10"
      },
      {
        "status": "unaffected",
        "version": "0",
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        "versionType": "custom"
      },
      {
        "status": "unaffected",
        "version": "4.19.316",
        "versionType": "custom",
        "lessThanOrEqual": "4.19.*"
      },
      {
        "status": "unaffected",
        "version": "5.4.278",
        "versionType": "custom",
        "lessThanOrEqual": "5.4.*"
      },
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        "status": "unaffected",
        "version": "5.10.219",
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        "version": "5.15.161",
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      {
        "status": "unaffected",
        "version": "6.1.93",
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        "status": "unaffected",
        "version": "6.6.33",
        "versionType": "custom",
        "lessThanOrEqual": "6.6.*"
      },
      {
        "status": "unaffected",
        "version": "6.9.4",
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        "lessThanOrEqual": "6.9.*"
      },
      {
        "status": "unaffected",
        "version": "6.10",
        "versionType": "original_commit_for_fix",
        "lessThanOrEqual": "*"
      }
    ],
    "programFiles": [
      "net/ipv6/seg6_hmac.c"
    ],
    "defaultStatus": "affected"
  }
]