ALT-BU-2020-3967-1
Branch p9 update bulletin.
Package kernel-image-un-def updated to version 5.7.13-alt1 for branch p9 in task 255889.
Closed vulnerabilities
BDU:2020-05547
Уязвимость функций expand_downwards и expand_upwards (mm/mmap.c) ядра операционных систем Linux, позволяющая нарушителю вызвать отказ в обслуживании
BDU:2021-02305
Уязвимость функции в drivers/char/random.c and kernel/time/timer.c ядра операционной системы Linux, позволяющая нарушителю получить конфиденциальную информацию
BDU:2021-02589
Уязвимость функции tss_invalidate_io_bitmap ядра операционной системы Linux, позволяющая нарушителю повысить свои привилегии
BDU:2021-03189
Уязвимость подсистемы cgroupv2 ядра операционной системы Linux, позволяющая нарушителю вызвать отказ в обслуживании или повысить свои привилегии
Modified: 2024-11-21
CVE-2020-14356
A flaw null pointer dereference in the Linux kernel cgroupv2 subsystem in versions before 5.7.10 was found in the way when reboot the system. A local user could use this flaw to crash the system or escalate their privileges on the system.
- openSUSE-SU-2020:1236
- openSUSE-SU-2020:1236
- openSUSE-SU-2020:1325
- openSUSE-SU-2020:1325
- https://bugzilla.kernel.org/show_bug.cgi?id=208003
- https://bugzilla.kernel.org/show_bug.cgi?id=208003
- https://bugzilla.redhat.com/show_bug.cgi?id=1868453
- https://bugzilla.redhat.com/show_bug.cgi?id=1868453
- [debian-lts-announce] 20200928 [SECURITY] [DLA 2385-1] linux-4.19 security update
- [debian-lts-announce] 20200928 [SECURITY] [DLA 2385-1] linux-4.19 security update
- [debian-lts-announce] 20201030 [SECURITY] [DLA 2420-1] linux security update
- [debian-lts-announce] 20201030 [SECURITY] [DLA 2420-1] linux security update
- [debian-lts-announce] 20201031 [SECURITY] [DLA 2420-2] linux regression update
- [debian-lts-announce] 20201031 [SECURITY] [DLA 2420-2] linux regression update
- https://lore.kernel.org/netdev/CAM_iQpUKQJrj8wE+Qa8NGR3P0L+5Uz=qo-O5+k_P60HzTde6aw%40mail.gmail.com/t/
- https://lore.kernel.org/netdev/CAM_iQpUKQJrj8wE+Qa8NGR3P0L+5Uz=qo-O5+k_P60HzTde6aw%40mail.gmail.com/t/
- https://security.netapp.com/advisory/ntap-20200904-0002/
- https://security.netapp.com/advisory/ntap-20200904-0002/
- USN-4483-1
- USN-4483-1
- USN-4484-1
- USN-4484-1
- USN-4526-1
- USN-4526-1
Modified: 2024-11-21
CVE-2020-15852
An issue was discovered in the Linux kernel 5.5 through 5.7.9, as used in Xen through 4.13.x for x86 PV guests. An attacker may be granted the I/O port permissions of an unrelated task. This occurs because tss_invalidate_io_bitmap mishandling causes a loss of synchronization between the I/O bitmaps of TSS and Xen, aka CID-cadfad870154.
- [oss-security] 20200721 Xen Security Advisory 329 v3 (CVE-2020-15852) - Linux ioperm bitmap context switching issues
- [oss-security] 20200721 Xen Security Advisory 329 v3 (CVE-2020-15852) - Linux ioperm bitmap context switching issues
- http://xenbits.xen.org/xsa/advisory-329.html
- http://xenbits.xen.org/xsa/advisory-329.html
- https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=cadfad870154e14f745ec845708bc17d166065f2
- https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=cadfad870154e14f745ec845708bc17d166065f2
- https://github.com/torvalds/linux/commit/cadfad870154e14f745ec845708bc17d166065f2
- https://github.com/torvalds/linux/commit/cadfad870154e14f745ec845708bc17d166065f2
- https://security.netapp.com/advisory/ntap-20200810-0001/
- https://security.netapp.com/advisory/ntap-20200810-0001/
Modified: 2024-11-21
CVE-2020-16166
The Linux kernel through 5.7.11 allows remote attackers to make observations that help to obtain sensitive information about the internal state of the network RNG, aka CID-f227e3ec3b5c. This is related to drivers/char/random.c and kernel/time/timer.c.
- openSUSE-SU-2020:1153
- openSUSE-SU-2020:1153
- openSUSE-SU-2020:1236
- openSUSE-SU-2020:1236
- https://arxiv.org/pdf/2012.07432.pdf
- https://arxiv.org/pdf/2012.07432.pdf
- https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=f227e3ec3b5cad859ad15666874405e8c1bbc1d4
- https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=f227e3ec3b5cad859ad15666874405e8c1bbc1d4
- https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=c51f8f88d705e06bd696d7510aff22b33eb8e638
- https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=c51f8f88d705e06bd696d7510aff22b33eb8e638
- https://github.com/torvalds/linux/commit/f227e3ec3b5cad859ad15666874405e8c1bbc1d4
- https://github.com/torvalds/linux/commit/f227e3ec3b5cad859ad15666874405e8c1bbc1d4
- [debian-lts-announce] 20200928 [SECURITY] [DLA 2385-1] linux-4.19 security update
- [debian-lts-announce] 20200928 [SECURITY] [DLA 2385-1] linux-4.19 security update
- [debian-lts-announce] 20201030 [SECURITY] [DLA 2420-1] linux security update
- [debian-lts-announce] 20201030 [SECURITY] [DLA 2420-1] linux security update
- [debian-lts-announce] 20201031 [SECURITY] [DLA 2420-2] linux regression update
- [debian-lts-announce] 20201031 [SECURITY] [DLA 2420-2] linux regression update
- FEDORA-2020-2cd6393548
- FEDORA-2020-2cd6393548
- FEDORA-2020-8d634e31c0
- FEDORA-2020-8d634e31c0
- https://security.netapp.com/advisory/ntap-20200814-0004/
- https://security.netapp.com/advisory/ntap-20200814-0004/
- USN-4525-1
- USN-4525-1
- USN-4526-1
- USN-4526-1
- https://www.oracle.com/security-alerts/cpuApr2021.html
- https://www.oracle.com/security-alerts/cpuApr2021.html
Modified: 2024-11-21
CVE-2020-29369
An issue was discovered in mm/mmap.c in the Linux kernel before 5.7.11. There is a race condition between certain expand functions (expand_downwards and expand_upwards) and page-table free operations from an munmap call, aka CID-246c320a8cfe.
- [oss-security] 20210210 Re: CVE-2021-20200: Linux kernel: close race between munmap() and expand_upwards()/downwards()
- [oss-security] 20210210 Re: CVE-2021-20200: Linux kernel: close race between munmap() and expand_upwards()/downwards()
- [oss-security] 20210219 Re: CVE-2021-20200: Linux kernel: close race between munmap() and expand_upwards()/downwards()
- [oss-security] 20210219 Re: CVE-2021-20200: Linux kernel: close race between munmap() and expand_upwards()/downwards()
- https://bugs.chromium.org/p/project-zero/issues/detail?id=2056
- https://bugs.chromium.org/p/project-zero/issues/detail?id=2056
- https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.7.11
- https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.7.11
- https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=246c320a8cfe0b11d81a4af38fa9985ef0cc9a4c
- https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=246c320a8cfe0b11d81a4af38fa9985ef0cc9a4c
- https://security.netapp.com/advisory/ntap-20210115-0001/
- https://security.netapp.com/advisory/ntap-20210115-0001/