Cryptographic issues in Linux kernel - CVE-2013-2546

Detailed vulnerability description

The vulnerability allows a local user to gain access to sensitive information.

The vulnerability exists due to cryptographic issues error within the crypto_shash_report() function in crypto/shash.c, within the crypto_rng_report() function in crypto/rng.c, within the crypto_pcomp_report() function in crypto/pcompress.c, within the crypto_report_cipher(), crypto_report_comp() and crypto_report_one() functions in crypto/crypto_user.c, within the crypto_blkcipher_report() function in crypto/blkcipher.c, within the crypto_ahash_report() function in crypto/ahash.c, within the crypto_aead_report() and crypto_nivaead_report() functions in crypto/aead.c, within the crypto_ablkcipher_report() and crypto_givcipher_report() functions in crypto/ablkcipher.c. A local user can gain access to sensitive information.

How to mitigate CVE-2013-2546

Sources

• http://www.openwall.com/lists/oss-security/2013/03/05/13
• https://github.com/torvalds/linux/commit/9a5467bf7b6e9e02ec9c3da4e23747c05faeaac6
• http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=9a5467bf7b6e9e02ec9c3da4e23747c05faeaac6
• http://www.ubuntu.com/usn/USN-1795-1
• http://www.ubuntu.com/usn/USN-1796-1
• http://www.ubuntu.com/usn/USN-1793-1
• http://www.ubuntu.com/usn/USN-1794-1
• http://www.ubuntu.com/usn/USN-1797-1
• http://www.mandriva.com/security/advisories?name=MDVSA-2013:176
• http://lists.opensuse.org/opensuse-updates/2013-12/msg00129.html