Описание
Security update for Linux Kernel Live Patch 21 for SLE 12 SP1
This update for the Linux Kernel 3.12.74-60_64_60 fixes several issues.
The following security bugs were fixed:
- CVE-2017-15274: security/keys/keyctl.c in the Linux kernel did not consider the case of a NULL payload in conjunction with a nonzero length value, which allowed local users to cause a denial of service (NULL pointer dereference and OOPS) via a crafted add_key or keyctl system call (bsc#1045327).
- CVE-2017-1000112: Updated patch for this issue to be in sync with the other livepatches. Description of the issue: Prevent race condition in net-packet code that could have been exploited by unprivileged users to gain root access (bsc#1052368, bsc#1052311).
- CVE-2017-9242: The __ip6_append_data function in net/ipv6/ip6_output.c was too late in checking whether an overwrite of an skb data structure may occur, which allowed local users to cause a denial of service (system crash) via crafted system calls (bsc#1042892).
- CVE-2017-8890: The inet_csk_clone_lock function in net/ipv4/inet_connection_sock.c allowed attackers to cause a denial of service (double free) or possibly have unspecified other impact by leveraging use of the accept system call (bsc#1038564).
Список пакетов
SUSE Linux Enterprise Server 12 SP1-LTSS
SUSE Linux Enterprise Server for SAP Applications 12 SP1
Ссылки
- Link for SUSE-SU-2017:2791-1
- E-Mail link for SUSE-SU-2017:2791-1
- SUSE Security Ratings
- SUSE Bug 1038564
- SUSE Bug 1042892
- SUSE Bug 1045327
- SUSE Bug 1052311
- SUSE Bug 1052368
- SUSE CVE CVE-2017-1000112 page
- SUSE CVE CVE-2017-15274 page
- SUSE CVE CVE-2017-8890 page
- SUSE CVE CVE-2017-9242 page
Описание
Linux kernel: Exploitable memory corruption due to UFO to non-UFO path switch. When building a UFO packet with MSG_MORE __ip_append_data() calls ip_ufo_append_data() to append. However in between two send() calls, the append path can be switched from UFO to non-UFO one, which leads to a memory corruption. In case UFO packet lengths exceeds MTU, copy = maxfraglen - skb->len becomes negative on the non-UFO path and the branch to allocate new skb is taken. This triggers fragmentation and computation of fraggap = skb_prev->len - maxfraglen. Fraggap can exceed MTU, causing copy = datalen - transhdrlen - fraggap to become negative. Subsequently skb_copy_and_csum_bits() writes out-of-bounds. A similar issue is present in IPv6 code. The bug was introduced in e89e9cf539a2 ("[IPv4/IPv6]: UFO Scatter-gather approach") on Oct 18 2005.
Затронутые продукты
Ссылки
- CVE-2017-1000112
- SUSE Bug 1052311
- SUSE Bug 1052365
- SUSE Bug 1052368
- SUSE Bug 1072117
- SUSE Bug 1072162
- SUSE Bug 1115893
Описание
security/keys/keyctl.c in the Linux kernel before 4.11.5 does not consider the case of a NULL payload in conjunction with a nonzero length value, which allows local users to cause a denial of service (NULL pointer dereference and OOPS) via a crafted add_key or keyctl system call, a different vulnerability than CVE-2017-12192.
Затронутые продукты
Ссылки
- CVE-2017-15274
- SUSE Bug 1045327
- SUSE Bug 1062471
Описание
The inet_csk_clone_lock function in net/ipv4/inet_connection_sock.c in the Linux kernel through 4.10.15 allows attackers to cause a denial of service (double free) or possibly have unspecified other impact by leveraging use of the accept system call.
Затронутые продукты
Ссылки
- CVE-2017-8890
- SUSE Bug 1038544
- SUSE Bug 1038564
- SUSE Bug 1039883
- SUSE Bug 1039885
- SUSE Bug 1040069
- SUSE Bug 1042364
- SUSE Bug 1051906
- SUSE Bug 1115893
Описание
The __ip6_append_data function in net/ipv6/ip6_output.c in the Linux kernel through 4.11.3 is too late in checking whether an overwrite of an skb data structure may occur, which allows local users to cause a denial of service (system crash) via crafted system calls.
Затронутые продукты
Ссылки
- CVE-2017-9242
- SUSE Bug 1041431
- SUSE Bug 1042892