crypto: authencesn - reject too-short AAD (assoclen<8) to match ESP/ESN spec
3Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackepss 0.1%
exploitation probability
0.1%top 98% of all CVEs
observed exploitation
nono source reports it
In the Linux kernel, the following vulnerability has been resolved:
crypto: authencesn - reject too-short AAD (assoclen<8) to match ESP/ESN spec
authencesn assumes an ESP/ESN-formatted AAD. When assoclen is shorter than
the minimum expected length, crypto_authenc_esn_decrypt() can advance past
the end of the destination scatterlist and trigger a NULL pointer dereference
in scatterwalk_map_and_copy(), leading to a kernel panic (DoS).
Add a minimum AAD length check to fail fast on invalid inputs.
Affected products
Linux · LinuxReferences
https://cert-portal.siemens.com/productcert/html/ssa-019113.htmlhttps://git.kernel.org/stable/c/161bdc90fce25bd9890adc67fa1c8563a7acbf40https://git.kernel.org/stable/c/2397e9264676be7794f8f7f1e9763d90bd3c7335https://git.kernel.org/stable/c/767e8349f7e929b7dd95c08f0b4cb353459b365ehttps://git.kernel.org/stable/c/9532ff0d0e90ff78a214299f594ab9bac81defe4https://git.kernel.org/stable/c/b0a9609283a5c852addb513dafa655c61eebc1efhttps://git.kernel.org/stable/c/df22c9a65e9a9daa368a72fed596af9d7d5876bbhttps://git.kernel.org/stable/c/fee86edf5803f1d1f19e3b4f2dacac241bddfa48