Bug 803041 – <sys-apps/systemd-{248.5, 249.1}: Denial of service (stack exhaustion) in systemd (PID 1) (CVE-2021-33910)

• Status: RESOLVED FIXED
• Product: Gentoo Security

[Description Kenton Groombridge 2021-07-20 13:03:11 UTC]

A stack exhaustion vulnerability was found in systemd that allows a local attacker crash to systemd (PID 1) and therefore crash the entire operating system (a kernel panic)

https://www.openwall.com/lists/oss-security/2021/07/20/2

Upstream commit: https://github.com/systemd/systemd/pull/20256/commits/441e0115646d54f080e5c3bb0ba477c892861ab9

[Comment 1 Sam James 2021-07-20 14:07:17 UTC]

Fixed in https://github.com/systemd/systemd-stable/releases/tag/v249.1.

[Comment 2 Sam James 2021-07-20 14:11:00 UTC]

(In reply to Sam James from comment #1)
> Fixed in https://github.com/systemd/systemd-stable/releases/tag/v249.1.

(and 248.5)

[Comment 3 Larry the Git Cow 2021-07-20 15:50:19 UTC]

The bug has been referenced in the following commit(s):

https://gitweb.gentoo.org/repo/gentoo.git/commit/?id=ff18c8e63c649d4e2dd4d7b195ca4defd85aa19d

commit ff18c8e63c649d4e2dd4d7b195ca4defd85aa19d
Author:     Mike Gilbert <[e-mail]>
AuthorDate: 2021-07-20 15:48:36 +0000
Commit:     Mike Gilbert <[e-mail]>
CommitDate: 2021-07-20 15:48:36 +0000

    sys-apps/systemd: security bump to 248.5, 249.1
    
    Bug: https://bugs.gentoo.org/803041
    Signed-off-by: Mike Gilbert <[e-mail]>

 sys-apps/systemd/Manifest                          |   3 +-
 sys-apps/systemd/systemd-248.5.ebuild              | 523 +++++++++++++++++++++
 ...{systemd-249-r3.ebuild => systemd-249.1.ebuild} |   1 -
 3 files changed, 525 insertions(+), 2 deletions(-)

[Comment 4 Sam James 2021-07-20 16:51:06 UTC]

amd64 done

[Comment 5 Sam James 2021-07-20 16:51:08 UTC]

x86 done

[Comment 6 Sam James 2021-07-20 18:32:51 UTC]

ppc done

[Comment 7 Sam James 2021-07-20 18:34:00 UTC]

ppc64 done

[Comment 8 Sam James 2021-07-20 18:35:39 UTC]

sparc done

[Comment 9 John Helmert III 2021-07-20 18:35:42 UTC]

GLSA request filed.

[Comment 10 Sam James 2021-07-20 19:13:02 UTC]

arm64 done

[Comment 11 Sam James 2021-07-20 19:13:09 UTC]

arm done

all arches done

[Comment 12 Sam James 2021-07-20 19:14:00 UTC]

Please cleanup, thanks!

[Comment 13 Larry the Git Cow 2021-07-20 19:19:58 UTC]

The bug has been referenced in the following commit(s):

https://gitweb.gentoo.org/repo/gentoo.git/commit/?id=45552ee6b4e67a0915e8064b00fe0feda67a87de

commit 45552ee6b4e67a0915e8064b00fe0feda67a87de
Author:     Mike Gilbert <[e-mail]>
AuthorDate: 2021-07-20 19:19:27 +0000
Commit:     Mike Gilbert <[e-mail]>
CommitDate: 2021-07-20 19:19:27 +0000

    sys-apps/systemd: drop 248.3-r1
    
    Bug: https://bugs.gentoo.org/803041
    Signed-off-by: Mike Gilbert <[e-mail]>

 sys-apps/systemd/Manifest                          |   1 -
 .../files/249-hostnamed-error-variable.patch       |  50 --
 sys-apps/systemd/files/gentoo-pam.patch            |  33 --
 sys-apps/systemd/systemd-248.3-r1.ebuild           | 520 ---------------------
 4 files changed, 604 deletions(-)

[Comment 14 GLSAMaker/CVETool Bot 2021-07-20 19:21:47 UTC]

This issue was resolved and addressed in
 GLSA 202107-48 at https://security.gentoo.org/glsa/202107-48
by GLSA coordinator Sam James (sam_c).

[Comment 15 Sam James 2021-07-20 19:22:15 UTC]

All done.