Description
In the Linux kernel, the following vulnerability has been resolved: xfrm: fix xfrm_state_construct() auth-trunc leak attach_auth_trunc() can allocate x->aalg while leaving x->props.aalgo at zero when the selected auth algorithm has no sadb_alg_id. One real case is cmac(aes). xfrm_state_construct() then treats !x->props.aalgo as "no auth algorithm attached yet" and calls attach_auth(). That overwrites x->aalg and loses the first allocation. Any later failure or teardown only frees the replacement pointer. Check whether x->aalg is already attached instead of inferring that state from x->props.aalgo.
Affected products
Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.
Linux Linux
Default version status: unaffected
4447bb33f09444920a8f1d89e1540137429351b6 to < 958ae9f261319e1cdc44879886bcda2263258ccaaffected4447bb33f09444920a8f1d89e1540137429351b6 to < fb7f3e74789a3c89647f4eb768f6dfaf4a751e72affected4447bb33f09444920a8f1d89e1540137429351b6 to < ba0c110c205855b3f1e3130d8c0fdb484d704c8caffected4447bb33f09444920a8f1d89e1540137429351b6 to < c8837bbe792257af547fd1c0252553ce13148795affected4447bb33f09444920a8f1d89e1540137429351b6 to < 71d42da01740ec6557837bebec0bc48cfc3b4c39affected4447bb33f09444920a8f1d89e1540137429351b6 to < cf67361e78dca488d6e4df8396a53e6745a3a80eaffected4447bb33f09444920a8f1d89e1540137429351b6 to < 37426395cb90ef217beec8407a14bd82153793d3affected4447bb33f09444920a8f1d89e1540137429351b6 to < be19d20e53a239572bb2a28efcc1cd2b069b1ef9affected4447bb33f09444920a8f1d89e1540137429351b6 to < c12cbf56320fb633484ee0ca1fb7d68d6b64b213affected
Linux Linux
Default version status: affected
2.6.33affected0 to < 2.6.33unaffected5.10.269 to ≤ 5.10.*unaffected5.15.220 to ≤ 5.15.*unaffected6.1.187 to ≤ 6.1.*unaffected6.6.156 to ≤ 6.6.*unaffected6.12.108 to ≤ 6.12.*unaffected6.18.49 to ≤ 6.18.*unaffected7.1.13 to ≤ 7.1.*unaffected7.2.3 to ≤ 7.2.*unaffected7.3 to ≤ *unaffected
References
- https://git.kernel.org/stable/c/958ae9f261319e1cdc44879886bcda2263258cca ↗
- https://git.kernel.org/stable/c/fb7f3e74789a3c89647f4eb768f6dfaf4a751e72 ↗
- https://git.kernel.org/stable/c/ba0c110c205855b3f1e3130d8c0fdb484d704c8c ↗
- https://git.kernel.org/stable/c/c8837bbe792257af547fd1c0252553ce13148795 ↗
- https://git.kernel.org/stable/c/71d42da01740ec6557837bebec0bc48cfc3b4c39 ↗
- https://git.kernel.org/stable/c/cf67361e78dca488d6e4df8396a53e6745a3a80e ↗
- https://git.kernel.org/stable/c/37426395cb90ef217beec8407a14bd82153793d3 ↗
- https://git.kernel.org/stable/c/be19d20e53a239572bb2a28efcc1cd2b069b1ef9 ↗
- https://git.kernel.org/stable/c/c12cbf56320fb633484ee0ca1fb7d68d6b64b213 ↗