oss-sec mailing list archives
Re: ASLRn't is still alive and well on x86 kernels, despite CVE-2024-26621 patch
From: Yves-Alexis Perez <corsac () debian org>
Date: Thu, 11 Jul 2024 21:06:40 +0200
-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 On Thu, 2024-07-11 at 09:07 +0200, Yves-Alexis Perez wrote:
If you want to see the lack of randomization, try the test with an x86 kernel, not amd64.I don't have one at hand unfortunately, but I'll try setting up a VM or something just to be sure. Thanks.
So I did try with an x86 VM and it does confirm your finding. On an unstable kernel the simple `cat /proc/self/maps |grep libc.so |head -n1` (with libc6 on x86 beeing more than 2M) I get no randomness at all. Regards, - -- Yves-Alexis -----BEGIN PGP SIGNATURE----- iQEzBAEBCAAdFiEE8vi34Qgfo83x35gF3rYcyPpXRFsFAmaQLUAACgkQ3rYcyPpX RFvWbAgAy9nuAhjaNtgT7zBs1/Th5E4/veuUQWdkh4CUbaRjpndmYI9fWGVxtyfh p1xc10mkxVi0onVw5hwd3fb3GxvSCtZEDfFG/8qfAC5wIn05/ZvKyZvaBySYMqSm au1tgM1A0CPrsbcf0wVJoE+hoQnGBl/d2fvd3cp9fDV3+ItYtbzH5XIgRugaGkfz 3kx+CK8kM5FbtWZ12ZkERXbvIUf8vqTuGbfqR3M6g3w8eqBqzkmi8TQcbhOP1X4N G0aJe3K5omlz77wxrCxBfBCT37uhPT6ljfJYaRUWhGXzT3UACmqM9QXu30/XBgjd rl9bGcbbvQJ+h5WZady6GLEQZg/Qsw== =Mbeb -----END PGP SIGNATURE-----
Current thread:
- ASLRn't is still alive and well on x86 kernels, despite CVE-2024-26621 patch Will Dormann (Jul 08)
- Re: ASLRn't is still alive and well on x86 kernels, despite CVE-2024-26621 patch Florian Weimer (Jul 08)
- Re: ASLRn't is still alive and well on x86 kernels, despite CVE-2024-26621 patch Will Dormann (Jul 08)
- Re: ASLRn't is still alive and well on x86 kernels, despite CVE-2024-26621 patch David A. Wheeler (Jul 08)
- Re: ASLRn't is still alive and well on x86 kernels, despite CVE-2024-26621 patch Florian Weimer (Jul 08)
- Re: ASLRn't is still alive and well on x86 kernels, despite CVE-2024-26621 patch Simon McVittie (Jul 08)
- Re: ASLRn't is still alive and well on x86 kernels, despite CVE-2024-26621 patch Will Dormann (Jul 08)
- Re: ASLRn't is still alive and well on x86 kernels, despite CVE-2024-26621 patch Yves-Alexis Perez (Jul 10)
- Re: ASLRn't is still alive and well on x86 kernels, despite CVE-2024-26621 patch Will Dormann (Jul 10)
- Re: ASLRn't is still alive and well on x86 kernels, despite CVE-2024-26621 patch Yves-Alexis Perez (Jul 11)
- Re: ASLRn't is still alive and well on x86 kernels, despite CVE-2024-26621 patch Yves-Alexis Perez (Jul 11)
- Re: ASLRn't is still alive and well on x86 kernels, despite CVE-2024-26621 patch Will Dormann (Jul 10)
- Re: ASLRn't is still alive and well on x86 kernels, despite CVE-2024-26621 patch Steffen Nurpmeso (Jul 10)
- Re: ASLRn't is still alive and well on x86 kernels, despite CVE-2024-26621 patch David A. Wheeler (Jul 11)
- Re: ASLRn't is still alive and well on x86 kernels, despite CVE-2024-26621 patch Steffen Nurpmeso (Jul 12)
- Re: ASLRn't is still alive and well on x86 kernels, despite CVE-2024-26621 patch Jacob Bachmeyer (Jul 13)
- Re: ASLRn't is still alive and well on x86 kernels, despite CVE-2024-26621 patch Steffen Nurpmeso (Jul 13)
- Re: ASLRn't is still alive and well on x86 kernels, despite CVE-2024-26621 patch Demi Marie Obenour (Jul 14)
- Re: ASLRn't is still alive and well on x86 kernels, despite CVE-2024-26621 patch Steffen Nurpmeso (Jul 15)
- Re: ASLRn't is still alive and well on x86 kernels, despite CVE-2024-26621 patch Jacob Bachmeyer (Jul 14)
- Re: ASLRn't is still alive and well on x86 kernels, despite CVE-2024-26621 patch Steffen Nurpmeso (Jul 15)
- Re: ASLRn't is still alive and well on x86 kernels, despite CVE-2024-26621 patch Florian Weimer (Jul 08)
